DTC Codes (Detailed Descriptions)
 

Diagnostic Trouble Code (DTC) Descriptions
DTC - Description Possible Causes Diagnostic Aides

P0102 - Mass Air Flow (MAF) Circuit Low Input
The MAF sensor circuit is monitored by the PCM for low air flow (or voltage) input through the comprehensive component monitor (CCM). If during key ON engine running the air flow (or voltage) changes below a minimum calibrated limit, the test fails. MAF sensor disconnected
MAF circuit open to PCM
VPWR open to MAF sensor
PWR GND open to MAF sensor
MAF RTN circuit open to PCM
MAF circuit shorted to GND
Intake air leak (near MAF sensor)
A closed throttle indication [throttle position (TP) sensor system]
Damaged MAF sensor
Damaged PCM
A MAF V PID (MAF PID) reading less than 0.23 volts (Refer to equivalent grams/second chart in GO to Pinpoint Test DC ) in continuous memory or key ON and engine running indicates a hard fault.

P0103 - Mass Air Flow (MAF) Circuit High Input The MAF sensor circuit is monitored by the PCM for high air flow (or voltage) input through the comprehensive component monitor (CCM). If during key ON engine OFF or key ON engine running the air flow (or voltage) changes above a maximum calibrated limit, the test fails. MAF sensor screen is blocked
MAF circuit shorted to VPWR
Damaged MAF sensor
Damaged PCM
A MAF V PID (MAF PID) reading less than 4.6 volts (Refer to equivalent grams/second chart in GO to Pinpoint Test DC ) in continuous memory or key ON and engine running indicates a hard fault.

P0106 - Barometric (BARO) Pressure Sensor Circuit Performance Baro sensor input to the PCM is monitored and is not within the calibrated value. Slow responding BARO sensor
Electrical circuit failure
Damaged BARO sensor
Damaged PCM
VREF voltage should be between 4.0 and 6.0 volts
PID reading is in frequency

P0107 - BARO/MAP Sensor Low Voltage Detected Sensor operating voltage is less than 0.25 volts (VREF), as a result it failed below the minimum allowable calibrated parameter. Open in the circuit, or short to ground
VREF circuit open, or short to ground
Damaged BARO/MAP sensor
Damaged PCM
VREF should be greater than 4.0 volts
PID reading is in frequency/volts

P0108 - BARO/MAP Sensor High Voltage Detected Sensor operating voltage is greater than 5.0 volts (VREF), as a result it failed above maximum allowable calibrated parameter. VREF shorted to VWPR
BARO/MAP signal shorted to VPWR
Damaged BARO/MAP sensor
Damaged PCM
VREF should be less than 6.0 volts. PID reading is in frequency/Volts

P0109 - BARO/MAP Sensor Circuit Intermittent The sensor signal to the PCM is failing intermittently. Loose electrical connection
Damaged BARO/MAP sensor
Check harness and connection.

P0112 - Intake Air Temperature (IAT) Circuit Low Input Indicates the sensor signal is less than Self-Test minimum. The IAT sensor minimum is 0.2 volts or 121°C (250°F). Grounded circuit in harness
Damaged sensor
Improper harness connection
Damaged PCM
IAT V PID reading less than 0.2 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

P0113 - Intake Air Temperature (IAT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The IAT sensor maximum is 4.6 volts or -50°C (-58°F). Open circuit in harness
Sensor signal short to power
Damaged sensor
Improper harness connection
Damaged PCM
IAT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

P0116 - Engine Coolant Temperature Circuit Range/Performance Failure Indicates the engine coolant temperature rationality test has failed. The PCM logic that sets this DTC indicates that engine coolant temperature sensor (ECT or CHT) drifted higher than the nominal sensor calibration curve and could prevent one or more OBD II monitors from executing.
The PCM runs this logic after an engine off "calibrated soak period (typically 6 hours). This soak period allows the Intake Air Temperature (IAT) and engine coolant temperature (CHTor ECT) to stabilize and not differ by more than a calibrated value. DTC P0116 is set when all of the following conditions are met:
Engine coolant temperature at engine start exceeds IAT at engine start by more than a calibrated value, typically 30°F (1°C).
Engine coolant temperature exceeds a calibrated value, typically 225F (107C).
The Fuel, Heated Oxygen Sensor, Catalyst and Misfire monitors have not completed.
Calibrated timer to set DTC P0116 has expired.
Engine Coolant Temperature (ECT) or Cylinder Head Temperature (CHT) sensor
Coolant System Concern
Ensure IAT and engine coolant temperature are similar when engine is cold. Also ensure engine coolant temperature sensor (ECT or CHT) and actual engine operating temperature are the same.

P0117 - Engine Coolant Temperature (ECT) Circuit Low Input Indicates the sensor signal is less than Self-Test minimum. The ECT sensor minimum is 0.2 volts or 121°C (250°F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Grounded circuit in harness
Damaged sensor
Improper harness connection
Damaged PCM
ECT V PID reading less than 0.2 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

P0118 - Engine Coolant Temperature (ECT) Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The ECT sensor maximum is 4.6 volts or -50°C (-58°F). Note on some vehicles that are not equipped with an ECT sensor, CHT can be used and can set this DTC. Open circuit in harness
Sensor signal short to power
Damaged PCM
Improper harness connection
Damaged sensor
ECT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

P0121 - Throttle Position (TP) Circuit Performance Problem The TP sensor circuit is monitored by the PCM for a non closed throttle position at idle. If key ON engine running self-test terminates upon placing the transmission range selector in gear (DRIVE or REVERSE) or when closing the throttle (idle) after opening it (in PARK or NEUTRAL) the TP closed throttle position is not attained, the test fails. Binding throttle linkage
Damaged throttle body
TP circuit open to PCM
Damaged TP sensor
SIG RTN circuit open to TP sensor
Drive vehicle, bring to a stop, turn key OFF. Start vehicle, run key ON engine running self-test at idle. Access KOER diagnostic trouble codes on scan tool.

P0122 - Throttle Position (TP) Circuit Low Input The TP sensor circuit is monitored by the PCM for a low TP rotation angle (or voltage) input through the comprehensive component monitor (CCM). If during key ON engine OFF or key ON engine running the TP rotation angle (or voltage) changes below a minimum calibrated limit, the test fails. TP sensor not seated properly
TP circuit open to PCM
VREF open to TP sensor
TP circuit short to GND
Damaged TP sensor
Damaged PCM
A TP PID (TP V PID) reading less than 3.42% (0.17 volt) in key ON engine OFF, continuous memory or key ON engine running indicates a hard fault.

P0123 - Throttle Position (TP) Circuit High Input The TP sensor circuit is monitored by the PCM for a high TP rotation angle (or voltage) input through the comprehensive component monitor (CCM). If during key ON engine OFF or key ON engine running the TP rotation angle (or voltage) changes above maximum calibrated limit, the test fails. TP sensor not seated properly
TP circuit short to PWR
VREF short to PWR
SIG RTN circuit open to TP sensor
Damaged TP sensor
Damaged PCM
A TP PID (TP V PID) reading greater than 93% (4.65 volts) in key ON engine OFF, continuous memory or key ON engine running indicates a hard fault.

P0125 - Insufficient Coolant Temperature For Closed Loop Fuel Control Indicates the ECT or CHT sensor has not achieved the required temperature level to enter closed loop operating conditions within a specified amount of time after starting engine. Insufficient warm up time
Low engine coolant level
Leaking or stuck open thermostat
Malfunctioning ECT sensor
Malfunctioning CHT sensor
Refer to Thermostat Monitor in Section 1, Description and Operation, for system information.

P0127 - Intake Air Temperature Too High Indicates that IAT2 sensor has detected a potential abnormality in the intercooler system. This condition will cause the boost from the supercharger to be bypassed to avoid potential engine damage. Blockage of heat exchangers
Low fluid level
Fluid leakage
Intercooler pump or relay failure
Crossed intercooler coolant lines
Monitor IAT2 PID. Typical IAT2 temperature should be greater than IAT1. Refer to Section 6 : Reference Values for ranges.

P0131 - HO2S Sensor Circuit Out of Range Low Voltage (HO2S-11) The HO2S sensor is monitored for a negative voltage known as characteristic shift downward (CSD). If the sensor is thought to be switching from 0 volts to -1 volts during testing, the PCM will use this input and remain in fuel control. Contaminated HO2S (water, fuel, etc)
Crossed HO2S signal/signal return wiring

P0133 - HO2S Sensor Circuit Slow Response (HO2S-11) The HEGO Monitor checks the HO2S Sensor frequency and amplitude. If during testing the frequency and amplitude were to fall below a calibrated limit, the test will fail. Contaminated HO2S sensor.
Exhaust leaks.
Shorted /open wiring.
Improper fueling.
MAF sensor.
Deteriorating HO2S sensor.
Inlet air leaks.
Access HO2S test results from the Generic OBD-II menu to verify DTC.

P0135 - HO2S Sensor Circuit Malfunction (HO2S-11) During testing the HO2S Heaters are checked for opens/shorts and excessive current draw. The test fails when current draw exceeds a calibrated limit and/or an open or short is detected. Short to VPWR in harness or HO2S.
Water in harness connector.
Open VPWR circuit.
Open GND circuit.
Low battery voltage.
Corrosion or poor mating terminals and wiring
Damaged HO2S heater.
Damaged PCM.
Wiring.
Damaged HO2S heater.
Damaged PCM.

P0136 - HO2S Sensor Circuit Malfunction (HO2S-12) The downstream HO2S sensor(s) are continuously checked for maximum and minimum voltages. The test fails when the voltages fail to meet the calibrated limits. Pinched, shorted, and corroded wiring and pins.
Crossed sensor wires.
Exhaust leaks.
Contaminated or damaged sensor.

P0141 - HO2S Sensor Circuit Malfunction (HO2S-125) See DTC P0135
P0148 - Fuel Delivery Error At least one bank lean at wide open throttle. Severely restricted fuel filter.
Severely restricted fuel supply line.

P0151 - HO2S Sensor Circuit Out of Range Low Voltage (HO2S-21) See DTC P0131

P0153 - HO2S Sensor Circuit Slow Response (HO2S-21) See DTC P0133

P0155 - HO2S Sensor Circuit Malfunction (HO2S-21) See DTC P0135

P0156 - HO2S Sensor Circuit Malfunction (HO2S-22) See DTC P0136

P0161 - HO2S Sensor Circuit Malfunction (HO2S-22) See DTC P0135

P0171 - System to Lean (Bank 1) The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. For lean and rich DTCs:
Fuel system
Excessive fuel pressure.
Leaking/contaminated fuel injectors.
Leaking fuel pressure regulator.
Low fuel pressure or running out of fuel.
Vapor recovery system.
Induction system:
Air leaks after the MAF.
Vacuum Leaks.
PCV system.
Improperly seated engine oil dipstick.
EGR system:
Leaking gasket.
Stuck EGR valve.
Leaking diaphragm or EVR.
Base Engine:
Oil overfill.
Cam timing.
Cylinder compression.
Exhaust leaks before or near the HO2Ss.
A SHRTFT-1,2 PID value between -25% to +35% and a LONGFT-1,2 PID value between -35% to +35% is acceptable. Reading beyond these values indicate a failure.

P0172 - System to Rich (Bank 1) The Adaptive Fuel Strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a lean calibrated limit. See Possible Causes for DTC P0171 See Diagnostic Aides for DTC P0171

P0174 - System to Lean (Bank 2) The Adaptive Fuel Strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. See Possible Causes for DTC P0171. See Diagnostic Aides for DTC P0171

P0175 - System to Rich (Bank 2) The Adaptive Fuel Strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a lean calibrated limit. See Possible Causes for DTC P0171. See Diagnostic Aides for DTC P0171

P0176 - Flexible Fuel (FF) Sensor Circuit Malfunction The FF sensor input signal to PCM is continuously monitored. The test fails when the signal falls out of a maximum or minimum calibrated range. Open or short in FF sensor VPWR circuit
Open in battery ground to FF sensor circuit
Open in FF sensor signal circuit
Short to ground in FF sensor signal circuit
Fuel contamination
Short to VPWR in FF sensor battery ground circuit
Short to VPWR in FF sensor signal circuit
Fuel separation
Damaged FF sensor
Damaged PCM
A flex fuel (FF) PID reading of 0 Hz with the key ON and engine OFF or with engine at idle indicates a hard fault.

P0180 - Engine Fuel Temperature Sensor A Circuit Low Input (EFT) The comprehensive component monitor (CCM) monitors the EFT sensor circuit to the PCM for low and high voltage. If voltage were to fall below or exceed a calibrated limit and amount of time during testing, the test will fail. Open or short in harness.
Low ambient temperature operation.
Improper harness connection.
Damaged EFT sensor.
Damaged PCM.
Verify EFT-PID value to determine open or short.

P0181 - Engine Fuel Temperature Sensor A Circuit Range/ Performance (EFT) The comprehensive component monitor (CCM) monitors the EFT Temperature for acceptable operating temperature. If during testing voltage were to fall below or exceed a calibrated limit, a calibrated amount of time the test will fail. Open or short in harness.
Low ambient temperature operation.
Improper harness connection.
Damaged EFT sensor.
Damaged PCM.
Verify EFT-PID value to determine open or short.

P0182 - Engine Fuel Temperature Sensor A Circuit Low Input (EFT) The comprehensive component monitor (CCM) monitors the EFT sensor circuit to the PCM for low voltage. If voltage were to fall below a calibrated limit and amount of time during testing, the test will fail. Short in harness.
VREF open or shorted.
Low ambient temperature operation.
Improper harness connection.
Damaged EFT sensor.
Damaged PCM.
Verify EFT-PID and VREF values to determine open or short.

P0183 - Engine Fuel Temperature Sensor A Circuit High Input (EFT) The comprehensive component monitor (CCM) monitors the EFT sensor circuit to the PCM for high voltage. If voltage were to exceed a calibrated limit and a calibrated amount of time during testing, the test will fail. Open or short to PWR in harness.
Damaged EFT sensor.
Improper harness connection.
Damaged PCM.
Verify EFT-PID value to determine open or short.

P0186 - Engine Fuel Temperature Sensor B Circuit Range/Performance (EFT) See DTC P0181.

P0187 - Engine Fuel Temperature Sensor B Circuit Low Input (EFT). See DTC P0182.

P0188 - Engine Fuel Temperature Sensor B Circuit High Input (EFT) See DTC P0183.

P0190 - Fuel Rail Pressure Sensor Circuit Malfunction (FRP) The comprehensive component monitor (CCM) monitors the FRP sensor to the PCM for VREF voltage. The test fails when the VREF voltage from the PCM drops to a voltage less than a minimum calibrated value. VREF open in harness.
VREF open in sensor.
VREF open in PCM.
Verify VREF voltage between 4.0 and 6.0V.

P0191 - Fuel Rail Pressure Sensor Circuit Performance (FRP) The comprehensive component monitor (CCM) monitors the FRP pressure for acceptable fuel pressure. The test fails when the fuel pressure falls below or exceeds a minimum/maximum calibrated value for a calibrated period of time. High fuel pressure.
Low fuel pressure.
Damaged FRP sensor.
Excessive resistance in circuit.
Low or no fuel.
A FRP PID value during KOER of 138 kpa (20 psi) and 413 kpa (60 psi) for gasoline or 586 kpa (85 psi) and 725 kpa (105 psi) for natural gas vehicles (NG) is acceptable.

P0192 - Fuel Rail Pressure Sensor Circuit Low Input (FRP) The comprehensive component monitor (CCM) monitors the FRP sensor circuit to the PCM for low voltage. If voltage were to fall below a calibrated limit and amount of time during testing, the test will fail. FRP signal shorted to SIG RTN or PWR GND.
FRP signal open (NG only)
Low fuel pressure (NG only)
Damaged FRP sensor.
Damaged PCM.
A FRP PID value during KOER or KOEO less than 0.3 volts for gasoline or 0.5 volts for natural gas vehicles (NG) would indicate a hard fault.

P0193 - Fuel Rail Pressure Sensor Circuit High Input (FRP) The comprehensive component monitor (CCM) monitors the FRP sensor circuit to the PCM for high voltage. If voltage were to fall below a calibrated limit and a calibrated amount of time during testing, the test will fail. FRP signal shorted to VREF or VPWR.
FRP signal open (gasoline only)
Low fuel pressure (NG only)
Damaged FRP sensor.
Damaged PCM.
High fuel pressure (caused by damaged fuel pressure regulator) NG.
A FRP PID value during KOER or KOEO less than 0.3 volts for gasoline or 0.5 volts for natural gas vehicles (NG) would indicate a hard fault.

P0201 through P0212 - Cylinder #1 through Cylinder #12 Injector Circuits The comprehensive component monitor (CCM) monitors the operation of the fuel injector drivers in the PCM. The test fails when the fuel injector does not operate electrically even though the harness assembly and fuel injectors test satisfactorily. Faulty fuel injector driver within the PCM.
PID Data Monitor INJ1F-INJ12F fault flags = YES.

P0217 - Engine Coolant Over-Temperature Condition Indicates an engine overheat condition was detected by the cylinder head temperature (CHT) sensor. This condition will cause the boost from the supercharger to be bypassed to avoid potential engine damage. Engine cooling system concerns.
Low engine coolant level.
Base engine concerns.
Monitor CHT PID for overheat condition. Typical CHT temperature should be close to cooling system thermostat opening specification.

P0230 - Fuel Pump Primary Circuit Malfunction NOTE: For natural gas applications, the following description applies to the fuel shutoff valve (FSV) circuit.
The PCM monitors the fuel pump (FP) circuit output from the PCM. The test fails if: With the FP output commanded ON (grounded), excessive current draw is detected on the FP circuit; or with the FP output commanded OFF, voltage is not detected on the FP circuit (the PCM expects to detect VPWR voltage coming through the fuel pump relay coil to the FP circuit). Open or shorted fuel pump (FP) circuit
Open VPWR circuit to fuel pump relay
Damaged fuel pump relay
Damaged PCM
When the FPF PID reads YES, a fault is currently present.
An open circuit or short to ground can only be detected with the fuel pump commanded OFF.
A short to power can only be detected with the fuel pump commanded ON.
During KOEO and KOER self-test, the fuel pump output command will be cycled ON and OFF.

P0231 - Fuel Pump Secondary Circuit Low NOTE: For natural gas applications, the following description applies to the fuel shutoff valve monitor (FSVM) and the fuel shutoff valve power (FSV PWR) circuits.
The PCM monitors the fuel pump monitor (FPM) circuit. The test fails if the PCM commands the fuel pump ON and B+ voltage is not detected on the FPM circuit. Open B+ circuit to the fuel pump relay
Open FP PWR circuit between the fuel pump relay and its connection to the FPM circuit
Damaged fuel pump relay
Damaged PCM (engine will start)
For 4.6L Mustang, open FP PWR circuit from low speed fuel pump relay, through resistor to FPM splice (engine will start)
For 5.4L SC Lightning, damaged IFS switch, IFS switch relay, or concern with related circuits.
During KOEO self-test, the PCM will command the fuel pump ON so this test can be performed.

P0232 - Fuel Pump Secondary Circuit High NOTE: For natural gas applications, the following description applies to the fuel shutoff valve monitor (FSVM) and the fuel shutoff valve power (FSV PWR) circuits.
The PCM monitors the fuel pump monitor (FPM) circuit. This test fails when the PCM detects voltage on the FPM circuit while the fuel pump is commanded OFF. The FPM circuit is wired to a pull-up voltage inside the PCM. The FPM circuit will go high if, with the key ON and the fuel pump commanded OFF, the FPM/FP PWR circuit loses its path to ground through the fuel pump. The FPM circuit will also go high if the FPM/FP PWR circuit is shorted to power.
Inertia fuel shutoff (IFS) switch not reset or electrically open
Open circuit between the fuel pump and the FPM connection to the FP PWR circuit
Poor fuel pump ground
Fuel pump electrically open
Fuel pump secondary circuits short to power
Fuel pump relay contacts always closed
Open FPM circuit between PCM and connection to FP PWR circuit
Damaged low speed fuel pump relay or concern with related circuits (if equipped).
Damaged PCM
Continuous memory P0232 can be set if the IFS switch was tripped, then reset, or if the fuel pump circuit is activated when the PCM expected the circuit to be off (i.e. fuel system test or prime procedure).

P0234 - Supercharger Overboost Condition The PCM disables (bypasses) the supercharger boost and sets a diagnostic trouble code (DTC) to keep from damaging the powertrain (engine or transmission) during potential harmful operating conditions. Brake torque (brake on and throttle at wide open)
Transmission oil temperature (TOT) exceeds calibrated threshold
Engine over temperature
Ignition misfire exceeds calibrated threshold
Knock sensor (KS) failure or knock detected
Low speed fuel pump relay not switching
Check for other diagnostic trouble codes accompanying the P0234 or check appropriate and available PIDs related to above possible causes.

P0243 - Supercharger (Boost) Bypass Solenoid Circuit Malfunction The PCM monitors the supercharger (boost) bypass (SCB) solenoid circuit for an electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified SCB solenoid duty cycle (100% or 0%) by PCM command. VPWR circuit open to SCB solenoid
SCB solenoid circuit shorted to PWR GND or CHASSIS GND
Damaged SCB solenoid
SCB solenoid circuit open
SCB solenoid circuit shorted to VPWR
Damaged PCM
Disconnect SCB solenoid. Connect test lamp to SCB solenoid harness connector. Cycle SCB driver in PCM by Output Test Mode. Test lamp cycle on and off - SCB solenoid is suspect. Test lamp always on - SCB signal short in harness or PCM. Test always off - SCB signal or VPWR open in harness or PCM.

P0298 - Engine Oil Over Temperature Condition Indicates the Engine Oil Temperature Protection strategy in the PCM has been activated. This will temporarily prohibit high engine speed operation by disabling injectors, therefore reducing the risk of engine damage from high engine oil temperature. Note: On engines which are equipped with an oil temperature sensor, the PCM reads oil temperature to determine if it is excessive. When an oil temperature sensor is not present, the PCM uses an oil algorithm to infer actual temperature. Engine shutdown strategy function is the same on vehicles with and without oil temperature sensors. Very high engine rpm for extended period of time.
Over-heating condition.
Malfunction EOT sensor or circuit (vehicles w/EOT sensor).
Base engine concerns.
Engine operating in high rpm range, due to improper gear selection. May cause Lack/Loss of Power or Surge customer concern.

P0300 - Random Misfire The random misfire DTC indicates multiple cylinders are misfiring or the PCM cannot identify which cylinder is misfiring. Camshaft position sensor (CMP)
Low fuel: less than 1/8 tank
Stuck open EGR valve
Blocked EGR passages
One or more EGR passages may be blocked or partially blocked. If this is the case the Misfire Detection Monitor will indicate the EGR port to check for possible blockage.

P0301 through P0310 - Misfire Detection Monitor The misfire detection monitor is designed to monitor engine misfire and identify the specific cylinder in which the misfire has occurred. Misfire is defined as lack of combustion in a cylinder due to absence of spark, poor fuel metering, poor compression, or any other cause. Ignition system
Fuel injectors
Running out of fuel
EVAP canister purge valve
Fuel pressure
Evaporative emission system
Base engine
The MIL will blink once per second when a misfire is detected severe enough to cause catalyst damage. If the MIL is on steady state, due to a misfire, this will indicate the threshold for emissions was exceeded and cause the vehicle to fail an inspection and maintenance tailpipe test.

P0320 - Ignition Engine Speed Input Circuit Malfunction The ignition engine speed sensor input signal to PCM is continuously monitored. The test fails when the signal indicates that two successive erratic profile ignition pickup (PIP) pulses have occurred. Loose wires/connectors.
Arcing secondary ignition components (coil, wires and plugs)
On board transmitter (2-way radio)
The DTC indicates that two successive erratic PIP pulses occurred.

P0325 - Knock Sensor 1 Circuit Malfunction (Bank 1) See DTC P0326

P0326 - Knock Sensor 1 Circuit Range/ Performance (Bank 1) The knock sensor detects vibrations upon increase and decrease in engine rpm. The knock sensor generates a voltage based on this vibration. Should this voltage go outside a calibrated level a DTC will set. Knock sensor circuit short to GND
Knock sensor circuit short to PWR
Knock sensor circuit open
Damaged knock sensor
Damaged PCM
A knock sensor voltage greater than 0.5V with the key ON and engine OFF indicates a hard fault.

P0330 - Knock Sensor 2 Circuit Malfunction (Bank 2) See DTC P0331

P0331 - Knock Sensor 2 Circuit Range/performance (Bank 2) The knock sensor detects vibration upon increase and decrease in engine rpm. The knock sensor generates a voltage based on this vibration. Should this voltage go outside a calibrated level a DTC will set. Knock sensor circuit short to GND
Knock sensor circuit short to PWR
Damaged knock sensor
Damaged PCM
Knock sensor circuit open
A knock sensor voltage greater than 0.5V with the key ON and engine OFF indicates a hard fault.

P0340 - Camshaft Position (CMP) Sensor Circuit Malfunction The test fails when the PCM can no longer detect the signal from the CMP sensor. CMP circuit open
CMP circuit short to GND
CMP circuit short to PWR
SIG RTN open (VR sensor)
CMP GND open (Hall effect sensor)
CMP misinstalled (Hall effect sensor)
Damaged CMP sensor shielding
Damaged CMP sensor
Damaged PCM
Harness routing, harness alterations, improper shielding, or electrical interference from other improperly functioning systems may have intermittent impact on the CMP signal.

P0350 - Ignition Coil (Undetermined) Primary/ Secondary Circuit Malfunction Each ignition primary circuit is continuously monitored. The test fails when the PCM does not receive a valid IDM pulse signal from the ignition module (integrated in PCM). Open or short in Ignition START/RUN circuit
Open coil driver circuit
Coil driver circuit shorted to ground
Damaged coil
Damaged PCM
Coil driver circuit shorted to VPWR

P0351 Through P0360 - Ignition Coil A through J Primary/ Secondary Circuit Malfunction Each ignition primary circuit is continuously monitored. The test fails when the PCM does not receive a valid IDM pulse signal from the ignition module (integrated in PCM). Open or short in Ignition START/RUN circuit
Open coil driver circuit in harness
Coil driver circuit shorted to ground
Damaged coil
Damaged PCM
Coil driver circuit shorted to PWR

P0400 EGR Flow Failure (outside the minimum or maximum limits) The EEGR system is monitored once per drive cycle during steady state conditions above 48 mph . The test will fail when a malfunction is detected by PCM calculations indicating the EGR flow is less or greater than expected. EEGR valve stuck open or closed
Connector to EEGR not seated
EEGR motor windings shorted or open circuited
No power to EEGR
Harness open or shorted to power or ground
Vacuum signal to MAP restricted or leaking
MAF sensor signal erroneous
Damaged PCM
Carbon build up in EEGR valve seat area
One or more sensor not responding or out of range
All of the following sensors input data to the PCM for proper operation of the EEGR system: ECT, CPS, IAT, MAF, TP, MAP. Any DTC relating to these sensors must be resolved prior to addressing

P0400 code.

P0401 - EGR Flow Insufficient Detected The EGR system is monitored during steady state driving conditions while the EGR is commanded on. The test fails when the signal from the DPF EGR sensor indicates that EGR flow is less than the desired minimum. Vacuum supply
EGR valve stuck closed
EGR valve leaks vacuum
EGR flow path restricted
EGRVR circuit shorted to PWR
VREF open to D.P.F. EGR sensor
D.P.F. EGR sensor downstream hose off or plugged
EGRVR circuit open to PCM
VPWR open to EGRVR solenoid
D.P.F. EGR sensor hoses both off
D.P.F. EGR sensor hoses reversed
Damaged EGR orifice tube
Damaged EGRVR solenoid
Damaged PCM
Perform KOER self-test and look for DTC P1408 as an indication of a hard fault. If P1408 is not present, look for contamination, restrictions, leaks, and intermittents.

P0402 - EGR Flow Excessive Detected The EGR system is monitored for undesired EGR flow during idle. The EGR monitor looks at the DPF EGR signal at idle and compares it to the stored signal measured during key ON and engine OFF. The test fails when the signal at idle is greater than at key ON engine OFF by a calibrated amount. EGR valve stuck open
Plugged EGR vacuum regulator solenoid vent
Plugged EGR tube
Slow responding D.P.F. EGR sensor
Damaged DPF EGR sensor
Improper vacuum hose connection
Plugged vacuum hoses
EGRVR circuit shorted to ground
Damaged EGR vacuum regulator solenoid
Damaged PCM
A DPFEGR PID reading that is greater at idle than during key ON and engine OFF by 0.5 volt or a rough engine idle, may indicate a hard fault.

P0403 EEGR Electric Motor Windings Or Circuits To The PCM Shorted Or Open The EEGR system is continously monitored to check the 4 EEGR motor coils, circuits, and the PCM for opens, shorts to power and ground. If a malfunction is detected the EEGR system will be disabled and additional monitoring will be suspended for the remainder of the drive until the next drive cycle. EEGR motor windings open
Connector to EEGR not seated
Open circuit in harness from PCM to EEGR
Open circuit in PCM
Short circuit in EEGR motor
Short circuit in harness from PCM to EEGR
Short circuit in PCM
If an intermittent condition is suspected the most effective methoid of wiring fault isolation is to use the wiggle test methoid while measuring for shorts and open circuits.

P0411 - Secondary Air Injection (AIR) system upstream flow See DTC P1411

P0412 - Secondary Air Injection System (AIR) circuit malfunction The PCM attempts to control when air is injected in the exhaust. The DTC indicates a Secondary Air injection system AIR circuit fault. AIR circuit open
AIR bypass solenoid fault
Damaged PCM
AIR circuit short to power
Solid state relay fault
Damaged AIR pump
The AIR circuit is normally held high through the AIR bypass solenoid and SSR when the output driver is off. Therefore, a low AIR circuit indicates a driver is always on and a high circuit indicates an open in the PCM.

P0420 - Catalyst System Efficiency Below Threshold (Bank 1) Indicates Bank 1 catalyst system efficiency is below the acceptable threshold Use of leaded fuel
Damaged HO2S
Malfunctioning ECT
High fuel pressure
Damaged exhaust manifold
Damaged catalytic converter
Oil contamination
Cylinder misfiring
Downstream HO2S wires improperly connected
Damaged exhaust system pipe
Damaged muffler/tailpipe assembly
Retarded spark timing
Compare HO2S upstream and downstream switch rate and amplitude. Under normal closed loop fuel conditions, high efficiency catalysts have oxygen storage which makes the switching frequency of the downstream HO2S very slow and reduces the amplitude of those switches as compared to the upstream HO2S. As catalyst efficiency deteriorates, its ability to store oxygen declines and the downstream HO2S signal begins to switch more rapidly with increase amplitude, approaching the switching rate and amplitude of the upstream HO2S. Once beyond an acceptable limit the DTC is set.

P0430 - Catalyst System Efficiency Below Threshold (Bank 2) Indicates Bank 2 catalyst system efficiency is below the acceptable threshold. Use of leaded fuel
Damaged HO2S
Malfunctioning ECT
High fuel pressure
Damaged exhaust manifold
Damaged catalytic converter
Oil contamination
Cylinder misfiring
Downstream HO2S wires improperly connected
Damaged exhaust system pipe
Damaged muffler/tailpipe assembly
Retarded spark timing
Compare HO2S upstream and downstream switch rate and amplitude. Under normal closed loop fuel conditions, high efficiency catalysts have oxygen storage which makes the switching frequency of the downstream HO2S very slow and reduces the amplitude of those switches as compared to the upstream HO2S. As catalyst efficiency deteriorates, its ability to store oxygen declines and the downstream HO2S signal begins to switch more rapidly with increase amplitude, approaching the switching rate and amplitude of the upstream HO2S. Once beyond an acceptable limit the DTC is set.

P0442 - EVAP Control System Leak Detected (Small Leak) The PCM monitors the complete EVAP control system for presence of a small fuel vapor leak. The system failure occurs when a fuel vapor leak from an opening as small as 1.016 mm (0.04 inch) is detected by the EVAP running loss monitor test. After-market EVAP hardware (such as fuel filler cap) non-conforming to required specifications
Small holes or cuts in fuel vapor hoses/tubes
Canister vent solenoid stays partially open on closed command
Damaged, cross-threaded or loosely installed fuel filler cap
Loose fuel vapor hose/tube connections to EVAP system components
EVAP system component seals leaking (EVAP canister purge valve, fuel tank pressure sensor, canister vent solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve assembly)

P0443 - EVAP Control System Canister Purge Valve Circuit Malfunction The PCM monitors the EVAP canister purge valve circuit for an electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified purge duty cycle by PCM command. VPWR circuit open
EVAP canister purge valve circuit shorted to GND
Damaged EVAP canister purge valve
EVAP canister purge valve circuit open
EVAP canister purge valve circuit shorted to VPWR
Damaged PCM
Monitor EVAPPDC PID and voltage between EVAP canister valve signal and PWR GND in output test mode with key ON engine OFF (or in key ON engine RUNNING mode). EVAPPDC PID at 0% and voltage less than 1.0 volts (or EVAPPDC PID at 100% and voltage less than 0.5 volts) indicates a hard fault.

P0451 - FTP Sensor Circuit Noisy The fuel tank pressure changes greater than 14 inches of H 2 0 in 0.10 seconds. Intermittent open or short in the FTP sensor or the FTP sensor signal.
Monitor FTP PID and does it change from above 15 inches of H 2 0 to below a minus (-) 15 inches of H 2 0 often in 1.0 minute.

P0452 - FTP Sensor Circuit Low Voltage Detected The PCM monitors the EVAP control system FTP sensor input signal to the PCM. The test fails when the signal average drops below a minimum allowable calibrated parameter. Contamination internal to FTP sensor connector
Damaged PCM
FTP circuit shorted to GND or SIG RTN
Damaged FTP sensor
FTP V PID reading less than 0.22 volt with key ON and engine OFF or during any engine operating mode indicates a hard fault.

P0453 - FTP Sensor Circuit High Voltage Detected The PCM monitors the EVAP control system FTP sensor input signal to the PCM. The test fails when the signal average jumps above a minimum allowable calibrated parameter. FTP circuit open
VREF shorted to VPWR
Damaged PCM
FTP circuit shorted to VREF or VPWR
SIG RTN circuit open
Damaged FTP sensor
FTP V PID reading greater than 4.50 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault.

P0455 - EVAP Control System Leak Detected (No Purge Flow or Large Leak) The PCM monitors the complete EVAP control system for no purge flow, the presence of a large fuel vapor leak or multiple small fuel vapor leaks. The system failure occurs when no purge flow (attributed to fuel vapor blockages or restrictions), a large fuel vapor leak or multiple fuel vapor leaks are detected by the EVAP running loss monitor test with the engine running (but not at idle). After-market EVAP hardware (such as fuel filler cap) non-conforming to required specifications
Disconnected or cracked fuel EVAP canister tube, EVAP canister purge outlet tube or EVAP return tube
EVAP canister purge valve stuck closed
Damaged EVAP canister
Damaged or missing fuel filler cap
Insufficient fuel filler cap installation
Loose fuel vapor hose/tube connections to EVAP system components
Blockages or restrictions in fuel vapor hoses/tubes (items also listed under disconnections or cracks)
Fuel vapor control valve tube assembly or fuel vapor vent valve assembly blocked
Canister vent (CV) solenoid stuck open
Mechanically inoperative fuel tank pressure (FTP) sensor
Check for audible vacuum noise or significant fuel odor in the engine compartment or near the EVAP canister and fuel tank.

P0456 - EVAP Control System Leak Detected (Very Small Leak) The PCM monitors the complete EVAP control system for the presence of a very small fuel vapor leak. The system failure occurs when a fuel vapor leak from an opening as small as 0.508 mm (0.020 inch) is detected by the EVAP running loss monitor test. Very small holes or cuts in fuel vapor hoses/tubes.
Loose fuel vapor hose/tube connections to EVAP system components.
EVAP system component seals leaking (refer to Possible Causes under DTC P0442).

P0457 - EVAP Control System Leak Detected (Fuel Filler Cap Loose/Off) A fuel tank pressure change greater than a minus (-) 7 inches of H 2 0 in 30 seconds has occurred after refueling; or there is excessive purge (fuel vapor) flow greater than 0.06 pounds per minute. Fuel filler cap not installed on refueling (storing continuous memory DTC) and "check Fuel Cap" light may also be illuminated.
Fuel filler cap missing, loose or cross-threaded.
Check for missing fuel filler cap or integrity of the cap. If OK, clear continuous memory DTCs and re-initiate EVAP Emission Running Loss Monitor Drive Cycle.

P0460 - Fuel Level Sensor Circuit Malfunction The PCM monitors the fuel level input (FLI) circuit for electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified fuel fill percentage in the fuel tank. Empty fuel tank
Fuel pump (FP) module stuck open
Incorrectly installed fuel gauge
Damaged instrument cluster
CASE GND circuit open
FLI shorted to VPWR
Damaged PCM
Overfilled fuel tank
Fuel pump (FP) module stuck closed
Damaged fuel gauge
FLI circuit open
FLI circuit shorted to CASE GND or PWR GND
CSE GND shorted to VPWR
Monitor FLI PID and FLI V PID in key ON engine RUNNING. FLI PID at 25% fill (with non matching fuel gauge) and FLI V PID less than 0.90 volts [for FLI PID at 75% fill (with non matching fuel gauge) and FLI V PID greater than 2.45 volts] indicates a hard fault.

P0500 - Vehicle Speed Sensor (VSS) Malfunction Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). If the engine rpm is above the torque converter stall speed (automatic transmission) and engine load is high, it can be inferred that the vehicle must be moving. If there is insufficient vehicle speed data input, a malfunction is indicated and a DTC is set. On most vehicle applications the malfunction indicator lamp (MIL) will be triggered when this DTC is set. Open in VSS+/VSS- harness circuit.
Open in TCSS signal or TCSS signal return harness circuit.
Short to GND in VSS harness circuit.
Short to GND in TCSS harness circuit.
Short to PWR in VSS harness circuit.
Short to PWR in TCSS harness circuit.
Open or short in the vehicle speed circuit(s) (VSC) between the PCM and appropriate control module.
Damaged VSS or TCSS.
Damaged wheel speed sensors.
Damaged wheel speed sensor harness circuits.
Damage in module(s) connected to VSC/VSS circuit.
Damage drive mechanism for VSS or TCSS.
Monitor VSS PID while driving vehicle. This DTC is set when the PCM detects a sudden loss of vehicle speed signal over a period of time. If vehicle speed data is lost, check the source of where the vehicle speed input originates from: VSS, TCSS, ABS, GEM or CTM. Note: On some MSOF applications, VSS and TCSS PID can be monitor. However if no TCSS PID is available and VSS PID is zero, TCSS circuitry frequency must be checked for loss of sensor signal. If another vehicle electronic module has generated the P0500 and the vehicle does not receive its vehicle speed input from one of the above mention sources (VSS, TCSS, ABS, GEM or CTM). Check the PCM for Output Shaft Speed Sensor (OSS) DTCs. On OSS applications the PCM uses the OSS to calculated the vehicle speed. If no OSS DTCs are found check for correct PCM configuration. Check PCM configuration for correct tire size and axle ratio.

P0501 - Vehicle Speed Sensor (VSS) Range/ Performance Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. This DTC is set the same way as P0500, however the malfunction indicator lamp (MIL) is not triggered. Refer to possible causes for P0500.
Refer to diagnostic aids for P0500.

P0503 - Vehicle Speed Sensor (VSS) Intermittent Indicates poor or noisy VSS performance. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). Noisy VSS/TCSS input signal from Radio Frequency Interference/ Electro-Magnetic Interference (RFI/EMI) external sources such as ignition components or charging circuit.
Damaged VSS or driven gears.
Damaged TCSS.
Damaged wiring harness or connectors.
Malfunction in module(s) or circuit connected to VSS/TCSS circuit.
After market add-on.
Monitor VSS PID while driving vehicle, check for intermittent vehicle speed indication. Verify ignition and charging system are functioning correctly.

P0505 - Idle Air Control System Malfunction The PCM attempts to control engine speed during KOER self-test. The test fails when the desired rpm could not be reached or controlled during the self-test. IAC circuit open
VPWR to IAC solenoid open
IAC circuit shorted to PWR
Air inlet is plugged
Damaged IAC valve
Damaged PCM
The IAC solenoid resistance is from 6 to 13 ohms.

P0552 - Power Steering Pressure (PSP) Sensor Circuit Malfunction The PSP sensor input signal to the PCM is continuously monitored.The test fails when the signal is open or shorted to ground. PSP sensor damaged
SIG RTN circuit open or shorted
VREF circuit open or shorted
PSP sensor signal circuit open or shorted
Damaged PCM
The DTC indicates the PSP sensor circuit is open or shorted to ground.

P0553 - Power Steering Pressure (PSP) Sensor Circuit Malfunction The PSP sensor input signal to PCM is continuously monitored. The test fails when the signal is shorted to power. PSP sensor damaged
SIG RTN circuit shorted to power
VREF circuit shorted to power
PSP sensor signal circuit shorted to power
Damaged PCM
The code indicates the PSP sensor circuit is shorted to power.

P0602 - Control Module Programming Error This Diagnostic Trouble Code (DTC) indicates programming error within Vehicle ID block (VID). VID data corrupted by the scan tool during VID reprogramming
Using the scan tool, reprogram the VID block. If PCM does not allow reprogramming of the VID block, reflashing PCM will be required.

P0603 - Powertrain Control Module KAM Test Error Indicates the PCM has experienced an internal memory fault. However there are external items that can cause this DTC. Reprogramming
Battery terminal corrosion
KAPWR to PCM interrupt/open
Loose battery connection
Damaged PCM
If KAPWR is interrupted to the PCM because of a battery or PCM disconnect, DTC can be generated on the first power-up.

P0605 - PCM read only memory (ROM) error Indicates the PCM ROM has been corupted. An attempt was made to change the calibration.
Module programming error.
Damaged PCM
Reprogram or update calibration.
Reprogram VID block (use as built data).
Check for other DTC's or drive symptoms for further action.

P0703 - Brake Switch Circuit Input Malfunction Indicates PCM did not receive a brake pedal position (BPP) input. Open or short in BPP circuit
Open or short in stoplamp circuits
Damaged PCM
Malfunction in module(s) connected to BPP circuit. (Rear Electronic Module [REM] Windstar and LS6/LS8 or Lighting Control Module (LCM) Continental and Town Car.
Damaged brake switch
Misadjusted brake switch
Check for proper function of stoplamps. Follow correct Self-Test procedures, refer to Section 2 of Quick Test.

P0704 - Clutch Pedal Position Switch Malfunction When the clutch pedal is depressed the voltage goes to low. If the PCM does not see this change from high to low the DTC is set. CPP circuit short to PWR
Damaged CPP switch
CPP circuit open in the SIGRTN
Damaged PCM
When depressing the CPP switch the voltage should cycle from 5.0V down.

P0720 - Insufficient input from Output Shaft Speed sensor The output shaft speed sensor inputs a signal to the PCM, based on the speed of the output shaft of the transmission. The PCM compares this signal with the signal of the VSS or TCSS and determines correct tire size and axle gear ratio. OSS sensor circuit short to GND
OSS sensor circuit short to PWR
OSS sensor circuit open
Damaged OSS sensor
Damaged PCM
Verify sensor signal output varies with vehicle speed.

P0721 - Noise interference on Output Shaft Speed sensor signal The output shaft speed sensor signal is very sensitive to noise. This noise distorts the input to the PCM. Wiring misrouted
After market add-on
Wiring damaged
Wiring insulation wear
Check routing of harness.
Check wiring and connector for damage.

P0722 - No signal from Output Shaft Speed sensor The output shaft speed sensor failed to provide a signal to the PCM upon initial movement of vehicle. Damaged OSS connector
Damaged OSS sensor, or not installed properly
Harness intermittently shorted or open

P0723 - Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted. Harness connector not properly seated
Harness intermittently shorted, or open
Harness connector damaged
OSS sensor damaged, or not installed properly
Verify harness and connector integrity
Verify OSS sensor proper installation

P0812 - Reverse Switch (RS) input circuit malfunction The DTC indicates that the voltage is high when it should be low. Transmission shift not indicating neutral while in KOEO Self-Test
RS circuit short to PWR
Damaged reverse switch
RS circuit open or short to SIGRTN
Damaged PCM
Check RS PID while exercising shift lever in and out of reverse.

P1000 - Monitor Testing Not Complete The on board diagnostic II (OBD II) monitors are performed during the OBD II Drive Cycle. The DTC will be stored in continuous memory if any of the OBD II monitors do not complete. Vehicle is new from the factory
Battery or PCM had recently been disconnected
An OBD II monitor failure had occurred before completion of an OBD II drive cycle
PCM DTCs have recently been cleared with a scan tool
PTO circuit is shorted to VPWR or B+ or PTO is on during testing
The DTC does not need to be cleared from the PCM except to pass an inspection/maintenance test.

P1001 - KOER Not Able To Complete, KOER Aborted This Non-MIL (Malfunction Indicator Lamp) code will be set when Key On Engine Running (KOER) Self-Test does not complete in the time intended. Incorrect Self-Test Procedure.
Unexpected response from Self-Test monitors.
rpm out of specification.
Rerun Self-Test following QT1 in Section 3 , Symptom Charts, STEP 1: PCM Quick Test.

P1100 - Mass Air Flow (MAF) Sensor Intermittent The MAF sensor circuit is monitored by the PCM for sudden voltage (or air flow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in key ON engine running the PCM detects a voltage (or air flow) change beyond the minimum or maximum calibrated limit, a continuous memory diagnostic trouble code (DTC) is stored. Poor continuity through the MAF sensor connectors
Poor continuity through the MAF sensor harness
Intermittent open or short inside the MAF sensor.
While accessing the MAF V PID on the scan tool, lightly tap on the MAF sensor or wiggle the MAF sensor connector and harness. If the MAF V PID suddenly changes below 0.23 volt or above 4.60 volts, an intermittent fault is indicated.

P1101 - Mass Air Flow (MAF) Sensor Out of Self-Test Range The MAF sensor circuit is monitored by the PCM for an out of range air flow (or voltage) input. If during key ON engine OFF the air flow voltage signal is greater than 0.27 volts the test fails. Likewise, if during key ON engine running, an air flow voltage signal is not within 0.46 volt to 2.44 volts, the test fails. For voltage to air flow gm/sec conversion, GO to Pinpoint Test DC and refer to Voltage To Mass Air Flow Conversion Table. Low battery charge
MAF sensor partially connected
MAF sensor contamination
PWR GND open to MAF sensor
MAF RTN circuit open to PCM
Damaged MAF sensor
Damaged PCM
A MAF V PID reading greater than 0.27 volts (KOEO) or a MAF V PID reading outside the 0.46 volt to 2.44 volts range (KOER) indicates a hard fault.

P1112 - Intake Air Temperature (IAT) Sensor Intermittent Indicates IAT sensor signal was intermittent during the comprehensive component monitor. Damaged harness
Damaged sensor
Damaged harness connector
Damaged PCM
Monitor IAT on scan tool, look for sudden changes in reading when harness is wiggled or sensor is tapped.

P1114 - Intake Air Temperature 2 Circuit Low Input Indicates the sensor signal is less than Self-Test minimum. The IAT2 sensor minimum is 0.2 volts. Grounded circuit in harness
Improper harness connection
Damaged sensor
Damaged PCM
Monitor IAT2 PID. Typical IAT2 temperature should be greater than IAT1. Refer to Section 6 : Reference Values for ranges.

P1115 - Intake Air Temperature 2 Circuit High Input Indicates the sensor signal is greater than Self-Test maximum. The IAT2 sensor maximum is 4.6 volts. Open circuit in harness
Sensor signal short to power
Improper harness connection
Damaged sensor
Damaged PCM
Monitor IAT2 PID. Typical IAT2 temperature should be greater than IAT1. Refer to Section 6 : Reference Values for ranges.

P1116 - Engine Coolant Temperature (ECT) Sensor Out of Self-Test Range Indicates the ECT sensor is out of Self-Test range. Correct range is 0.3 to 3.7 volts. Overheating condition
Malfunctioning thermostat
Damaged ECT sensor
Low engine coolant
Damaged harness connector
Damaged PCM
Engine coolant temperature must be greater than 10°C (50°F) to pass the KOEO Self-Test and greater than 82°C (180°F) to pass the KOER Self-Test.

P1117 - Engine Coolant Temperature (ECT) Sensor Intermittent Indicates ECT circuit became intermittently open or shorted while engine was running. Damaged harness
Damaged sensor
Damaged PCM
Damaged harness connector
Low engine coolant
Monitor ECT on scan tool, look for sudden changes in reading when harness is wiggled or sensor is tapped.

P1120 - Throttle Position (TP) Sensor Out of Range Low (RATCH too Low) The TP sensor circuit is monitored by the PCM for a low TP rotation angle (or voltage) input below the closed throttle position through the comprehensive component monitor (CCM). If during key ON engine OFF or key ON engine running the TP rotation angle (or voltage) remains within the calibrated self-test range but falls between 3.42 and 9.85% (0.17 and 0.49 volt), the test fails. TP circuit with frayed wires
Corrosion on TP circuit connectors
VREF open to TP sensor
VREF short to SIG RTN
TP sensor loose pins
A TP PID (TP V PID) between 3.42 and 9.85% (0.17 and 0.49 volt) in key ON engine OFF, continuous memory or key ON engine running indicates a hard fault.

P1121 - Throttle Position (TP) Sensor Inconsistent with MAF Sensor The PCM monitors a vehicle operation rationality check by comparing sensed throttle position to mass air flow readings. If during key ON engine running self-test the comparison of the TP sensor and MAF sensor readings are not consistent with calibrated load values, the test fails and a diagnostic trouble code is stored in continuous memory. Air leak between MAF sensor and throttle body
TP sensor not seated properly
Damaged TP sensor
Damaged MAF sensor
Drive vehicle and exercise throttle and TP sensor in all gears. A TP PID (TP V PID) less than 4.82 % (0.24 volt) with a LOAD PID greater than 55% or a TP V PID greater than 49.05% (2.44 volts) with a LOAD PID less than 30% indicates a hard fault.

P1124 - Throttle Position (TP) Sensor Out of Self-Test Range The TP sensor circuit is monitored by the PCM for an out of range TP rotation angle (or voltage) input. If during key ON engine OFF or key ON engine running the TP rotation angle (or voltage) reading is less than 13.27% (0.66 volt) or greater than 23.52% (1.17 volts), the test fails. Binding or bent throttle linkage
TP sensor not seated properly
Throttle plate below closed throttle position
Throttle plate/screw misadjusted
Damaged TP sensor
Damaged PCM
A TP PID (TP V PID) reading not between 13.27 and 23.52% (0.66 and 1.17 volts) in key ON engine OFF or key ON engine running indicates a hard fault.

P1125 - Throttle Position (TP) Sensor Intermittent The TP sensor circuit is monitored by the PCM for sudden TP rotation angle (or voltage) input change through the comprehensive component monitor (CCM). If during the last 80 warm-up cycles in key ON engine running the PCM detects a TP rotation angle (or voltage) changes beyond the minimum or maximum calibrated limit, a continuous diagnostic trouble code (DTC) is stored. Poor continuity through the TP sensor connectors
Poor continuity through the TP harness
Intermittent open or short inside the TP sensor
While accessing the TP V PID on the scan tool, lightly tap on the TP sensor or wiggle the TP sensor connector and harness. If the TP V PID suddenly changes below 0.49 volt or above 4.65 volts, an intermittent fault is indicated.

P1127 - Exhaust Not Warm Enough, Downstream Sensor Not Tested The HEGO monitor uses an exhaust temperature model to determine when the HO2S heaters are cycled ON. The test fails when the inferred exhaust temperature is below a minimum calibrated value. Engine not operating long enough prior to performing KOER self-test.
Exhaust system too cool.
Monitor HO2S Heater PIDs to determine their ON/OFF state. DTC P1127 will be present if the exhaust is not hot.

P1128 - Upstream Oxygen Sensors Swapped from Bank to Bank (HO2S-11-21) The HEGO monitor checks and determines if the HO2S signal response for a fuel shift corresponds to the correct engine bank. The test fails when a response from the HO2S(s) being tested is not indicated. Crossed HO2S harness connectors (upstream).
Crossed HO2S wiring at the harness connectors (upstream).
Crossed HO2S wiring at the 104-pin harness connectors (upstream).

P1129 - Downstream Oxygen Sensors Swapped from Bank to Bank (HO2S-12-22) The HEGO monitor checks and determines if the HO2S signal response for a fuel shift corresponds to the correct engine bank. The test fails when a response from the HO2S(s) being tested is not indicated. Crossed HO2S harness connectors (downstream).
Crossed HO2S wiring at the harness connectors (downstream).
Crossed HO2S wiring at the 104-pin harness connectors (downstream).

P1130 - Lack of HO2S-11 Switch, Fuel Trim at Limit The HEGO Sensor is monitored for switching. The test fails when the HO2S fails to switch due to circuit or fuel at or exceeding a calibrated limit. Electrical:
Short to VPWR in harness or HO2S
Water in harness connector
Open/Shorted HO2S circuit
Corrosion or poor mating terminals and wiring
Damaged HO2S
Damaged PCM
Fuel System:
Excessive fuel pressure
Leaking/contaminated fuel injectors
Leaking fuel pressure regulator
Low fuel pressure or running out of fuel
Vapor recovery system
Induction System:
Air leaks after the MAF
Vacuum Leaks
PCV system
Improperly seated engine oil dipstick
EGR System:
Leaking gasket
Stuck EGR valve
Leaking diaphragm or EVR
Base Engine:
Oil overfill
Cam timing
Cylinder compression
Exhaust leaks before or near the HO2S(s)
A fuel control HO2S PID switching across 0.45 volt from 0.2 to 0.9 volt indicates a normal switching HO2S.

P1131 - Lack of HO2S-11 Switch, Sensor Indicates Lean A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. See Possible Causes for DTC P1130

P1132 - Lack of HO2S-11 Switch, Sensor Indicates Rich A HEGO sensor indicating rich at the end of a test is trying to correct for an over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. See Possible Causes for DTC P1130

P1137 - Lack of HO2S-12 Switch, Sensor Indicates Lean The downstream HO2S sensors are forced rich and lean and monitored by the PCM. The test fails if the PCM does not detect the output of the HO2S in a calibrated amount of time. Pinched, shorted, and corroded wiring and pins
Crossed sensor wires
Exhaust leaks
Contaminated or damaged sensor

P1138 - Lack of HO2S-12 Switch, Sensor Indicates Rich See DTC P1137

P1150 - Lack of HO2S-21 Switch, Fuel Trim at Limit See DTC P1130

P1151 - Lack of HO2S-21 Switch, Sensor Indicates Lean A HEGO sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when fuel control system no longer detects switching for a calibrated amount of time. See Possible Causes for DTC P1130

P1152 - Lack of HO2S-21 Switch, Sensor Indicates Rich A HEGO sensor indicating rich at the end of a test is trying to correct for an over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time. See Possible Causes for DTC P1130

P1157 - Lack of HO2S-22 Switch, Sensor Indicates Lean See DTC P1137

P1158 - Lack of HO2S-22 Switch, Sensor Indicates Rich See DTC P1137

P1168 - Fuel Rail Pressure Sensor in Range But Low The comprehensive component monitor (CCM) monitors the FRP pressure for acceptable fuel pressure. The test fails when the fuel pressure falls below a calibrated value. Low fuel pressure
Damaged FRP sensor
Excessive resistance in circuit
Low or no fuel
A FRP PID value below 551 kpa (80 psi) indicates a failure
Low or no fuel
A FRP PID value greater than 896 kpa (130 psi) indicates a failure

P1169 - Fuel Rail Pressure (FRP) Sensor in Range But High The comprehensive component monitor (CCM) monitors the FRP pressure for acceptable fuel pressure. The test fails when the fuel pressure falls below or exceeds a minimum/maximum calibrated value for a calibrated period of time. High fuel pressure
Low fuel pressure
Damaged FRP sensor
Excessive resistance in circuit

P1180 - Fuel Delivery System - Low The PCM receives fuel tank pressure (FTP) information from the natural gas module (NG), which uses the information to infer fuel rail pressure (FRP). The test fails when the inferred pressure is less than a minimum calibrated value. Restriction in the fuel line
Plugged fuel filter

P1181 - Fuel Delivery System - High The PCM receives fuel tank pressure (FTP) information from the natural gas module (NG), which uses the information to infer fuel rail pressure (FRP). The test fails when the inferred pressure is higher than a maximum calibrated value. Fuel pressure regulator

P1183 - Engine Oil Temperature (EOT) Sensor Circuit Malfunction Indicates EOT circuit became intermittently open or shorted while engine was running. Damaged harness
Damaged sensor
Damaged harness connector
Damaged PCM
EOT V PID reading less than 0.2 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault short to ground. EOT V PID reading greater than 4.5 volts with key ON and engine OFF or during any engine operating mode indicates an open circuit hard fault.

P1184 - Engine Oil Temperature (EOT) Sensor Out of Self-Test Range Indicates EOT signal was out of Self-Test range. Correct range for KOER is 0.3-1.2 volts. Damaged harness
Damaged sensor
Damaged harness connector
Damaged PCM
Engine should be at operating temperature before running self-test.

P1229 - Supercharger Intercooler Pump (ICP) Pump Not Operating The ICP DTC will be set when the PCM is calling for the pump to be operating but no current is being detected. Pump motor open circuited
Pump relay coil open
Open circuit between relay and pump
Damaged PCM
Pump motor shorted
Open circuit between PCM and relay
Poor pump ground connection
Check for voltage at relay, check fuse in power feed, check ground connection of pump motor, PID reading is on/off.

P1232 - Low Speed Fuel Pump Primary Circuit Malfunction The PCM monitors the low speed fuel pump (LFP) primary circuit output from the PCM. The test fails if: When the LFP circuit is commanded on (grounded), excessive current draw is detected on the LFP circuit; or when the LFP circuit is commanded off, voltage is not detected on the LFP circuit (the PCM expects to detect VPWR voltage coming through the low speed fuel pump relay coil to the LFP circuit). Open or shorted low fuel pump (LFP) circuit
Open VPWR to low speed fuel pump relay
Damaged low speed fuel pump relay
Damaged PCM
An open circuit or short to ground can only be detected with the low speed fuel pump.
A short to power can only be detected with the low speed fuel pump commanded on.
During KOEO and KOER Self-Test, the low speed fuel pump output command will be cycled on and off.

P1233 - Fuel System Disabled or Offline LS6/LS8:
For LS6/LS8, P1233 indicates the PCM is not receiving the fuel level information on SCP from the rear electronics module (REM). Refer to the Workshop Manual Section 413-01 for diagnostics.
All Others:
The PCM monitors the fuel pump monitor (FPM) circuit from the fuel pump driver module (FPDM). With the key on, the FPDM continuously sends a duty cycle signal to the PCM through the FPM circuit. The test fails if the PCM stops receiving the duty cycle signal. Inertia fuel shutoff (IFS) switch needs to be reset
Open FPDM ground circuit
Open or shorted FPM circuit
Damaged IFS switch
Damaged FPDM
Damaged PCM
Also for Escort/Tracer and Mustang:
Open FPDM PWR circuit
Open B+ circuit to constant control relay module (CCRM) pin 11
Open ground to CCRM pin 18 (Mustang)
Damaged CCRM
Also for Continental:
Open VPWR circuit to FPDM
The PCM expects to see one of the following duty cycle signals from the FPDM on the FPM circuit: 1) 50% (500 msec on, 500 msec off), all OK. 2) 25% (250 msec on, 750 msec off), FPDM did not receive a fuel pump (FP) duty cycle command from the PCM, or the duty cycle that was received was invalid. 3) 75% (750 msec ON, 250 OFF), the FPDM has detected a fault in the circuits between the FPDM and the fuel pump.

P1234 - Fuel System Disabled or Offline See DTC P1233. P1234 is identical to P1233 except P1234 will not illuminate the MIL.

P1235 - Fuel Pump Control Out Of Range Note: For LS6/LS8, the FPDM functions are incorporated in the Rear Electronics Module (REM). Also, the REM does not use a FPM circuit. Diagnostic information will be sent through SCP.
Indicates that the FPDM has detected an invalid or missing FP circuit signal from the PCM. The FPDM will send a message to the PCM through the FPM circuit, indicating that this failure has been detected. The PCM will set the DTC when the message is received. FP circuit open or shorted
Damaged FPDM.
Damaged PCM
The FPDM sends a 25% duty cycle (250 msec ON, 750 msec OFF) through the FPM circuit to the PCM while the fault is being detected by the FPDM. If the fault is no longer detected, the PDM will return to sending an "all OK" (50% duty cycle) message to the PCM. The PCM will keep P1235 stored in Continuous Memory.

P1236 - Fuel Pump Control Out Of Range See DTC P1235. P1236 is identical to P1235 except P1236 will not illuminate the MIL.

P1237 - Fuel Pump Secondary Circuit Malfunction Note: For LS6/LS8, the FPDM functions are incorporated in the rear electronics module (REM). Also, the REM does not use a FPM circuit. Diagnostic information will be set through SCP.
Indicates that the FPDM has detected a fuel pump secondary circuit fault. The FPDM will send a message to the PCM through the FPM circuit, indicating that this failure has been detected. The PCM will set the DTC when the message is received. Open or shorted FP PWR circuit
Open FP RTN circuit to FPDM
Open or shorted circuit in the fuel pump
Locked fuel pump rotor
Damaged FPDM
For LS6/LS8, circuits associated with the Fuel Pump relay
The FPDM sends a 75% duty cycle (750 msec ON, 250 msec OFF) through the FPM circuit to the PCM while the fault is being detected by the FPDM. If the fault is no longer detected, the PCM will return to sending an "all OK" (50% duty cycle) message to the PCM. The PCM will keep P1237 stored in Continuous Memory.
The FPDM controls pump speed by supplying a "variable" ground on the RTN circuit.

P1238 - Fuel Pump Secondary Circuit Malfunction See DTC P1237. P1238 is identical to P1237 except P1238 will not illuminate the MIL.
P1244 - Generator Load Input Low The PCM monitors the GLI circuit, and will set the DTC when the input is below calibrated limit for a calibrated amount of time. GLI circuit open or short
Damaged voltage regulator/generator
Damaged PCM
Verify operation of charging system.

P1245 - Generator Load Input High The PCM monitors the GLI circuit, and will set the DTC when the input is above a calibrated limit for a calibrated amount of time. GLI circuit open or short
Damaged voltage regulator/generator
Damaged PCM
Verify operation of charging system.

P1246 - Generator Load Input (2.0L Cougar) The PCM monitors the GLI circuit, and will set the DTC when the input is not within a calibrated limit for a calibrated amount of time. GLI circuit concern.
Damaged voltage regulator/generator
Damaged PCM.
Verify operation of charging system.
Verify battery is at proper charge.

P1246 - Generator Load Input Failed (All Others) The PCM monitors generator load from the generator/regulator in the form of frequency. The frequency range is determined by the temperature of the voltage regulator where 97% represents full load, below 6% means no load. Generator circuit short to GND
Generator circuit short to PWR
Generator circuit open
Generator drive mechanism
Damaged generator/regulator assembly
Damaged PCM
Verify battery voltage is 14.5V.
Verify generator/regulator has the correct part number.

P1260 - Theft Detected - Vehicle Immobilized Indicates that the passive anti-theft system (PATS) has determined a theft condition existed and the engine is disabled. This DTC is a good indicator to check the PATS for DTCs. Previous theft condition
Anti-Theft System failure
Theft indicator flashing rapidly or on solid when ignition switch is in the ON position. Check anti-theft system for DTCs. Typical vehicle symptoms are: Start/Stall or Crank/No Start. NOTE: No crank symptom only on vehicles equipped with PATS starter disable feature.

P1270 - Engine RPM/Vehicle Speed Limiter Indicates the vehicle has been operated in a manner which caused the engine or vehicle to exceed a calibration limit. The engine rpm and vehicle speed are continuously monitored by the PCM. The DTC is set when the rpm or speed fall out of calibrated range. For additional information on the engine rpm/vehicle speed limiter, refer to Section 1, Electronic Engine Control (EC) System , Powertrain Control Software. Wheel slippage (water, ice, mud and snow)
Excessive engine rpm in Neutral
Vehicle drive at a high rate of speed
The DTC indicates the vehicle has been operated in a manner which caused the engine or vehicle speed to exceed a calibrated limit.

P1285 - Cylinder Head Over Temperature Sensed Indicates an engine overheat condition was sensed by the cylinder head temperature sensor. Low engine coolant level
Base engine concerns
Engine cooling system concerns
CHT sensor concern
On some applications when this fault occurs the Engine Temperature warning indicator will illuminate and/or force the temperature gauge to full H (Hot) zone by grounding the engine temperature warning circuit.

P1288 - Cylinder Head Temperature (CHT) Sensor Circuit Out of Self-Test Range Indicates the CHT sensor is out of Self-Test range. Engine not at operating temperature. Cold engine
Engine overheating
Damaged harness connector
Damaged PCM
Low engine coolant level
Damaged CHT sensor
Bring engine to operating temperature. If cold, re-run self-test. If engine over-heats check cooling system.

P1289 - Cylinder Head Temperature (CHT) Sensor Circuit High Input (PCM STRATEGIES UP TO AND INCLUDING 1998) Indicates a CHT sensor circuit malfunction (shorted). Grounded circuit in CHT harness
Damaged CHT sensor
Improper harness connection
Damaged PCM
CHT V PID reading less than 0.2 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault. Note: DTC P0117 may also be reported when this DTC is set, either of these DTC's will activate the MIL light.

P1289 - Cylinder Head Temperature (CHT) Sensor Circuit High Input (PCM STRATEGIES 1999 AND BEYOND) Indicates a CHT sensor circuit malfunction (open). Open circuit in CHT harness
Damaged CHT sensor
Improper harness connection
Damaged PCM
CHT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault. Note: DTC P0118 may also be reported when this DTC is set, either of these DTC's will activate the MIL light.

P1290 - Cylinder Head Temperature (CHT) Sensor Circuit Low Input (PCM STRATEGIES UP TO AND INCLUDING 1998) Indicates a CHT sensor circuit malfunction (open). Open circuit in CHT harness
Damaged CHT sensor
Improper harness connection
Damaged PCM
CHT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault. Note: DTC P0118 may also be reported when this DTC is set, either of these DTC's will activate the MIL light.

P1290 - Cylinder Head Temperature (CHT) Sensor Circuit Low Input (PCM STRATEGIES 1999 AND BEYOND) Indicates a CHT sensor circuit malfunction (shorted). Grounded circuit in CHT harness
Damaged CHT sensor
Improper harness connection
Damaged PCM
CHT V PID reading greater than 4.6 volts with key ON and engine OFF or during any engine operating mode indicates a hard fault. Note: DTC P0118 may also be reported when this DTC is set, either of these DTC's will activate the MIL light.

P1299 - Cylinder Head Over Temperature Protection Active Indicates an engine overheat condition was detected by the cylinder head temperature (CHT) sensor. An FMEM Strategy called Fail-safe Cooling was activated to cool the engine. Engine cooling system concerns
Low engine coolant level
Base engine concerns
Refer to Section 1, Powertrain Control Software , for more information on Fail-safe Cooling Strategy and cylinder head temperature sensor.

P1309 - Misfire Monitor Disabled When the misfire monitor is disabled, usually due to the input signal generated by the camshaft position (CMP) sensor, by sensing the passage of teeth from the CMP wheel. Camshaft position sensor
Powertrain control module
ECT, MAF, and CKP sensors
Verify the CMP is installed correctly and not out of synchronization.

P1380 - Variable Cam Timing Solenoid A Circuit Malfunction The comprehensive component monitor(CCM) monitors the VCT circuit to the PCM for high and low voltage. If during testing voltage was to fall below a calibrated limit a calibrated amount of time the test will fail. Open or short VCT circuit
Open VPWR circuit
Damaged PCM
Open or short VCT solenoid valve
DTC P1380 is a VCT circuit check. Testing should include wires, solenoid coil and PCM.

P1381 - Variable Cam Timing Over-advanced (Bank 1) The comprehensive component monitor (CCM) monitors the VCT position for an over-advanced camshaft timing. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position. Cam timing improperly set
No oil flow to the VCT piston chamber
Low oil pressure
VCT solenoid valve stuck closed
Camshaft advance mechanism binding (VCT unit)
P1381 DTC is a check of the VCT unit. Testing should not include electrical checks. Diagnostics and repair for the VCT unit are located in the Workshop Manual.

P1383 - Variable Cam Timing Over-retarded (Bank 1) The comprehensive component monitor (CCM) monitors the VCT position for over-retarded camshaft timing. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an retarded position. Cam timing improperly set
Continuous oil flow to the VCT piston chamber
VCT solenoid valve stuck open
Camshaft advance mechanism binding (VCT unit)
DTC P1383 is a check of the VCT unit. Testing should not include electrical checks. Engine will idle rough, hard starting and may stall. Diagnostics and repair for the VCT unit are located in the Workshop Manual.
P1400 - DPF EGR Sensor Circuit Low Voltage Detected The EGR monitor checks the DPF EGR sensor signal to the PCM for low voltage. The test fails when the average voltage to the PCM drops to a voltage less than the minimum calibrated value. DPFEGR circuit short to GND
Damaged DPF EGR sensor
VREF short to GND
Damaged PCM
A DPF EGR PID reading less than 0.2 volt with the key ON and engine OFF or running, indicates a hard fault.

P1401 - DPF EGR Sensor Circuit High Voltage Detected The EGR monitor checks the DPF EGR sensor signal to the PCM for high voltage. The test fails when the average voltage to the PCM goes to a voltage greater than the maximum calibrated value. DPF EGR circuit open
VREF short to PWR
Damaged DPF EGR sensor
DPFEGR circuit short to PWR
SIG RTN circuit open
Damaged PCM
A DPF EGR PID reading greater than 4.5 volts with the key ON and engine OFF or running, indicates a hard fault.

P1405 - DPF EGR Sensor Upstream Hose Off or Plugged While driving, the EGR monitor commands the EGR valve closed and checks the differential pressure across the EGR orifice. The test fails when the signal from the DPF EGR sensor indicates EGR flow is in the negative direction. Upstream hose is disconnected
Upstream hose is plugged (ice)
Plugged or damaged EGR tube
Look for signs of water or icing in hose
Verify hose connection and routing (no excessive dips)
Verify DPF EGR sensor proper mounting and function (view DPF EGR PID while applying and releasing vacuum directly to sensor with a hand pump)

P1406 - DPF EGR Sensor Downstream Hose Off or Plugged While driving, the EGR monitor commands the EGR valve closed and checks the differential pressure across the EGR orifice. The test fails when the signal from the DPF EGR sensor continues to indicate EGR flow even after the EGR valve is commanded closed. Downstream hose is disconnected
Downstream hose is plugged (ice)
Plugged or damaged EGR tube
Look for signs of water or icing in hose
Verify connection and routing (no excessive dips)
Verify DPF EGR sensor proper mounting and function (view DPFEGR PID while applying and releasing vacuum directly to sensor with a hand pump)

P1408 - EGR Flow Out of Self-Test Range (Non MIL) This test is performed during the KOER on demand self-test only. The EGR system is commanded ON at a fixed engine speed. The test fails and the DTC is output when the measured EGR flow falls above or below the required calibration . For vacuum activated systems see Possible Causes for DTC P0401.For electric motor system see Possible Causes DTC P0400. For Electric EGR, use the output state control function of the scan tool and monitor the MAP PID (MAP) and the EEGR PID (EGRMDSD) while commanding the EEGR on. If EGR is introduced into the engine at idle, the rpm will drop or stall out. For vacuum systems see Diagnostic Aids for P0401.

P1409 - EGR Vacuum Regulator Solenoid Circuit Malfunction This test checks the electrical function of the EGRVR solenoid. The test fails when the EGRVR circuit voltage is either too high or too low when compared to the expected voltage range. The EGR system must be enabled for the test to be completed. EGRVR circuit open
VPWR open to EGRVR solenoid
EGRVR circuit short to VPWR or GND
Damaged EGRVR solenoid
Damaged PCM
The EGR vacuum regulator solenoid resistance is from 26 to 40 ohms.

P1411 - Secondary Air Injection (AIR) system downstream flow The secondary air injection system does not detect the presence of air in the exhaust when introduced by the secondary air injection system Electric AIR Pump
Hose from AIR pump leak
AIR bypass solenoid leak/blocked
Hose from AIR pump blocked
AIR bypass solenoid stuck open/closed
In order to test the AIR pump, it must be capable of driving the HO2S lean.

P1413 Secondary Air Injection System Monitor Circuit Low The secondary air injection system monitor circuit is low, indicating the electrical AIR pump is off although the electrical AIR pump was commanded on by the PCM. Open B+ circuit
Open AIR circuit
Damaged PCM
Air circuit short to ground
Damaged AIR pump
Damaged solid state relay
The AIR monitor circuit is held low by the resistance path through the AIR pump when the pump is off. Also, look for open circuit from SSR to AIR pump.

P1414 Secondary Air Injuction System Monitor Circuit High The secondary air injection system monitor circuit is high, indicating the electrical AIR pump is on although the electrical AIR pump was commanded off by the PCM. Open AIR monitor circuit from the pump
AIR circuit short to power
Damaged solid state relay
Open AIR pump ground
Damaged AIR pump
Damaged PCM

P1432 - Thermostat Heater Control (THTRC) Circuit Failure The Comprehensive component monitor (CCM) monitors the THTRC circuit to the PCM for high and low voltage. If during testing; voltage was to fall below a calibrated limit for a calibrated amount of time the test will fail and set the DTC and MIL. Open or shorted THTRC circuit
Open VPWR
Open or shorted thermostat assembly
Damaged PCM
DTC P1432 is a THTRC circuit check. Testing should include wire harness, thermostat heater and PCM.

P1443 - Very Small Or No Purge Flow Condition A fuel tank pressure change greater than a minus (-) 7 inches of H 2 O in 30 seconds has occurred with purge (fuel vapor) flow less than 0.02 pounds per minute. Blocked fuel vapor hose between EVAP canister purge valve and FTP sensor.
Blocked fuel vapor hose between EVAP canister purge valve and engine intake manifold.
Blocked vacuum hose between EVAP canister purge valve-solenoid and engine intake manifold.
EVAP canister purge valve stuck closed (mechanically).
Check for blockages between the fuel tank, EVAP canister purge valve and engine intake manifold. Check obstructions in the EVAP canister purge valve diaphragm and ports.

P1450 - Unable to Bleed Up Fuel Tank Vacuum Monitors the fuel vapor vacuum and pressure in the fuel tank. The system failure occurs when the EVAP running loss monitor detects excessive fuel tank vacuum with the engine running (but not at idle). Blockages or kinks in EVAP canister tube or EVAP canister purge outlet tube (between fuel tank, EVAP canister purge valve and EVAP canister)
Fuel filler cap stuck closed (no vacuum relief)
Contaminated fuel vapor elbow on EVAP canister
Restricted EVAP canister
CV solenoid stuck open (partially or fully)
Plugged CV solenoid filter
EVAP canister purge valve stuck open
VREF circuit open (harness near FTP sensor, FTP sensor or PCM)
Damaged FTP sensor

P1451 - EVAP Control System Canister Vent Solenoid Circuit Malfunction
Monitors the canister vent (CV) solenoid circuit for an electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified canister vent duty cycle by PCM command. VPWR circuit open
CV solenoid circuit shorted to PWR GND or CHASSIS GND
Damaged CV solenoid
CV solenoid circuit open
CV solenoid circuit shorted to VPWR
Damaged PCM
To verify normal function, monitor the EVAP canister vent solenoid signal PID EVAPCV and the signal voltage (PCM control side). With the valve open, EVAPCV will indicate 0 percent duty cycle and the voltage approximately equal to battery voltage. When the valve is commanded fully closed, EVAPCV will indicate 100% duty cycle and a voltage drop of 4 volts minimum is normal. Output test mode may be used to switch output ON/OFF to verify function.

P1460 - Wide Open Throttle A/C Cutout Primary Circuit Malfunction NOTE: For applications that use a normally open relay to control the A/C clutch, the following description applies to the A/C clutch relay control circuit. Monitors the wide open throttle A/C cutoff (WAC) circuit output from the PCM. The test fails if: When the PCM grounds the WAC circuit, excessive current draw is detected on the WAC circuit; or with the WAC circuit not grounded by the PCM, voltage is not detected on the WAC circuit (the PCM expects to detect VPWR voltage coming through the WAC relay coil to the WAC circuit). Open or shorted WAC circuit
Damaged WAC relay (or CCRM)
Open VPWR circuit to WAC relay
Damaged PCM
When the WACF PID reads YES, a fault is currently present
An open circuit or short to ground can only be detected when the PCM is not grounding the circuit
A short to power can only be detected when the PCM is grounding the circuit
During KOEO and KOER self-test, the WAC circuit will be cycled ON and OFF
Verify A/C and defrost were OFF during KOEO and KOER self-test (Check ACCS PID to verify)
If vehicle is not equipped with A/C, DTC P1460 can be ignored

P1461 - Air Conditioning Pressure Sensor (ACP) Sensor High Voltage Detected ACP inputs a voltage to the PCM. If the voltage is above a calibrated level the DTC will set. ACP sensor circuit short to PWR
ACP circuit open
Damaged PCM
ACP circuit short to VREF
ACP circuit short to SIGRTN
Damaged ACP sensor
Verify VREF voltage between 4.0 and 6.0V.

P1462 - Air Conditioning Pressure Sensor (ACP) Sensor Low Voltage Detected ACP inputs a voltage to the PCM. If the voltage is below the calibrated level the DTC will set. ACP circuit short to GND or SIGRTN
VREF circuit open
Damaged PCM
Open ACP circuit
Damaged ACP sensor
Verify VREF voltage between 4.0 and 6.0V.

P1463 - Air Conditioning Pressure Sensor (ACP) Insufficient Pressure Change Each time the A/C clutch engages, the PCM is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC will set. A/C system mechanical failure
Open ACP or VREF circuit
A/C sensor damaged
A/C system electrical failure
A/C clutch always engaged
Verify A/C system function, including refrigerant charge.

P1464 - A/C Demand Out Of Self-Test Range Indicates the ACCS input to the PCM was high during Self-Test. A/C was on during self-test
A/C Clutch PWR circuit short to power (applications with N/C WAC relay contacts)
ACCS circuit short to power
Damaged A/C demand switch
Damaged WAC relay (or CCRM)
Damaged PCM
If A/C or defrost were on during self-test, turn off and rerun test.

P1469 - Low A/C Cycling Period Indicates frequent A/C compressor clutch cycling. Mechanical A/C system concern (such as low refrigerant charge, damaged A/C cycling switch)
Intermittent open between the cycling pressure switch and pin 41 (ACCS) to the PCM
Intermittent open in IGN RUN circuit to cycling pressure switch (if applicable)
An intermittent open circuit, although possible, is unlikely
This test was designed to protect the transmission. In some strategies, the PCM will unlock the torque converter during A/C clutch engagement. If a concern is present that results in frequent A/C clutch cycling, damage could occur if the torque converter was cycled at these intervals. This test will detect this condition, set the DTC and prevent the torque converter from excessive cycling.

P1474 - Low Fan Control (LFC) Primary Circuit Failure Monitors the low fan control (LFC) (fan control [FC] for one speed fan application) primary circuit output from the PCM. The test fails if: When the PCM grounds the LFC/FC circuit, excessive current draw is detected on the LFC/FC circuit; or with the LFC/FC circuit not grounded by the PCM, voltage is not detected on the LFC/FC circuit (the PCM expects to detect VPWR voltage coming through the low speed FC relay [or CCRM] coil to the LFC/FC circuit). Open or shorted LFC/FC circuit
Open VPWR circuit to low speed FC relay
Damaged low speed FC relay (or CCRM)
Damaged PCM
When the LFCF PID reads YES, a fault is currently present
An open circuit or short to ground can only be detected when the PCM is not grounding the LFC/FC circuit
A short to power can only be detected when the PCM is grounding the LFC/FC circuit.
During KOEO and KOER Self-Test, the LFC/FC circuit will be cycled on and off

P1474 - Hydraulic Cooling Fan Primary Circuit Failure (HCF) This test checks the electrical function of the (HCF) primary circuit. The test fails if: the PCM detects voltage either too high or too low when compared to the expected voltage range on the (HCF) primary circuit. HCF circuit open
HCF circuit short to power
HCF circuit short to ground
Damaged HCF solenoid
Damaged PCM
The HCF solenoid is integrated in the HCF pump which looks like a power steering pump. The electrical resistance of the solenoid windings is nominally 10 ohms.

P1477 - Medium Fan Control (MFC) Primary Circuit Failure Monitors the medium fan control (MFC) primary circuit output from the PCM. The test fails if: With the MFC output commanded on (grounded), excessive current draw is detected on the MFC circuit; or with the MFC circuit commanded off, voltage is not detected on the MFC circuit (the PCM expects to detect IGN START/RUN voltage coming through the medium speed FC relay coil to the MFC circuit). Open or shorted MFC circuit
Open IGN START/RUN circuit to medium speed FC relay
Damaged medium speed FC relay
Damaged PCM
Same as P1479, except with MFC circuit and MFCF PID (for early build Escape, MFCF and MFC PIDs may not be available)
Using Output Test Mode on scan tool, when commanding the low speed fan on, the PCM will also activate the medium speed fan output.

P1479 - High Fan Control (HFC) Primary Circuit Failure Monitors the high fan control (HFC) primary circuit output from the PCM. The test fails if: With the HFC output commanded on (grounded), excessive current draw is detected on the HFC circuit; or with the HFC circuit commanded off, voltage is not detected on the HFC circuit (the PCM expects to detect VPWR voltage coming through the high speed FC relay [or CCRM] coil to the HFC circuit). Open or shorted HFC circuit
Open VPWR circuit to high speed FC relay
Damaged high speed FC relay (or CCRM)
Damaged PCM
When the HFCF PID reads YES, a fault is currently present
An open circuit or short to ground can only be detected when the PCM is not grounding the HFC circuit
A short to power can only be detected when the PCM is grounding the HFC circuit
During KOEO and KOER self-test, the HFC circuit will be cycled on and off

P1500 - Vehicle Speed Sensor (VSS) Intermittent Indicates the VSS input signal was intermittent. This DTC is set when a VSS fault interferes with other OBDII tests, such as Catalyst efficiency monitor, EVAP monitor, HO2S monitor, etc. Intermittent VSS connections
Intermittent open in VSS harness circuit(s)
Intermittent short in VSS harness circuit(s)
Damaged VSS
Damaged PCM

P1501 - Vehicle Speed Sensor (VSS) Out of Self Test Range Indicates the VSS input signal is out of Self Test range. If the PCM detects a VSS input signal any time during Self Test, a DTC P1501 will be set and the test will abort. Noisy VSS input signal from Radio Frequency Interference/ Electro-Magnetic Interference (RFI/EMI) external sources such as ignition wires, charging circuit or after market equipment.
Check for VSS input to be 0 mph when vehicle transmission is in Park.

P1502 - Vehicle Speed Sensor (VSS) Intermittent Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). This DTC is set the same way as P0500. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for P0500.
Refer to diagnostic aids for P0500.

P1502 - Vehicle Speed Sensor (VSS) Intermittent (TCIL illuminates) Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). This DTC is set the same way as P0500. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for P0500 Refer to diagnostic aides for P0500

P1504 - Idle Air Control (IAC) Circuit Malfunction This DTC is set when the PCM detects an electrical load failure on the IAC output circuit. IAC circuit open
VPWR to IAC solenoid open
IAC circuit short to PWR
IAC circuit short to GND
Damaged IAC valve
Damaged PCM
The IAC solenoid resistance is from 6 to 13 ohms.

P1506 - Idle Air Control (IAC) Overspeed Error This DTC is set when the PCM detects engine idle speed that is greater than the desired rpm. IAC circuit short to GND
Damaged IAC valve
IAC valve stuck open
Vacuum leaks
Failed EVAP system
Damaged PCM
Disconnect IAC valve and look for little or no change in engine rpm as an indication of a stuck or damaged valve.

P1507 - Idle Air Control (IAC) Underspeed Error This DTC is set when the PCM detects engine idle speed that is less than the desired rpm. IAC circuit open
IAC circuit short to PWR
VPWR to IAC solenoid open
Air inlet is plugged
Damaged IAC solenoid
Damaged PCM
The IAC solenoid resistance is from 6 to 13 ohms
Disconnect IAC valve and look for no change in engine rpm as an indication of a stuck or damaged valve

P1516 - Intake Manifold Runner Control Input Error (Bank 1)
P1517 - Intake Manifold Runner Control Input Error (Bank 2) The IMRC system is monitored for failure during continuous or key ON engine OFF self-test. Each DTC will distinguish the corresponding failed bank for IMRC actuator assemblies with dual monitor switches. The test fails when the signal on the monitor pin is outside an expected calibrated range. Mechanical concern - bind, seize, damage or obstruction of IMRC hardware
An IMRCM PID reading at closed throttle that is less than VREF may indicate a fault
An IMRCM PID reading near 1 volt or greater with engine rpm of at least 3000 may indicate a fault

P1518 - Intake Manifold Runner Control Malfunction (Stuck Open) The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is less than an expected calibrated range at closed throttle. IMRC monitor signal circuit shorted to PWR GND or SIG RTN
Damaged IMRC actuator
Damaged PCM
An IMRCM PID reading approximately near 1 volt at closed throttle may indicate a fault

P1519 - Inlet Manifold Runner Control Malfunction (Stuck Closed) The IMRC system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is more than an expected calibrated range with IMRC activated. IMRC monitor circuit open
IMRC control circuit open
IMRC monitor circuit short to VREF
IMRC monitor return circuit open
Damaged IMRC actuator
IMRC VPWR circuit open
Damaged PCM
An IMRCM PID reading at VREF with engine rpm of at least 3000 may indicate a fault.

P1549 - Intake Manifold Communication Control Circuit Malfunction The IMCC or intake manifold tuning (IMT) valve system is monitored for failure during continuous or key ON engine OFF self-test. The test fails when the PCM detects a concern with IMT valve output circuit. Open IMT valve circuit
Open VPWR circuit
Shorted IMT valve circuit
Damaged IMT valve
Damaged PCM
An IMT valve fault PID (IMTVF) displaying YES status may indicate a fault

P1550 - Power Steering Pressure (PSP) Sensor Malfunction The PSP sensor input signal to PCM is continuously monitored. The test fails when the signal falls out of a maximum or minimum calibrated range. PSP sensor damaged
Damaged PCM
The DTC indicates the PSP sensor is out of Self-Test range.

P1572 - Brake Pedal Switch Circuit Indicates that the brake input rationality test for brake pedal position (BPP) and brake pressure applied (BPA) switches has failed. One or both inputs to the PCM did not change when it was expected to. Misadjusted brake switch
Blown fuse
Damaged BPP switch
Damaged BPA switch
Open or short in BPP circuit
Open or short in BPA circuit
Damaged PCM
Check for proper function of stoplamps and speed control operation. Follow correct Self-Test procedures, refer to Section 2 Quick Test.

P1605 - Keep Alive Memory Test Failure Indicates the PCM has experienced an internal memory test failure. However there are external items that can cause this DTC. Reprogramming
Battery terminal corrosion
Damaged PCM
KAPWR to PCM interrupt/open
Loose battery connection
If KAPWR is interrupted to the PCM, because of a battery or PCM disconnect, DTC can be generated on the first power-up.

P1633 - Keep Alive Power Voltage Too Low Indicates that the Keep Alive Power (KAPWR) circuit has experienced a power interrupt. Open KAPWR circuit
Damaged PCM
Intermittent KAPWR Circuit

P1635 - Tire/Axle Ratio Out Of Acceptable Range This Diagnostic Trouble Code (DTC) indicates the tire and axle information contained in Vehicle ID block (VID) does not match vehicle hardware. Incorrect tire size
Incorrect axle ratio
Incorrect VID configuration parameters
Using the scan tool, view the tire and axle parameters within the VID. They must match vehicle hardware.

P1636 - Inductive Signature Chip Communication Error Indicates the PCM has lost communication with the Inductive Signature Chip. PCM Damaged

P1639 - Vehicle ID Block Not Programed Or Is Corrupt This diagnostic trouble code (DTC) indicates that the vehicle ID (VID) block is not programed or the information within is corrupt. New PCM
Incorrect PCM
Incorrect VID configuration
Using an enhanced scan tool, reprogram the PCM to the most recent calibration available.

P1640 - Powertrain DTC's Available in Another Module Vehicles using a secondary Engine Control Module can request that the Powertrain Control Module illuminate the Check Engine Light when a failure occurs which affect emission. DTCs stored in a secondary module, which requested the MIL to be turned on.
Call-up PID address 0946 to determine secondary module requesting MIL illumination. Once secondary module is determined request DTCs from module.

P1650 - Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test
PSP switch/shorting bar damaged
SIG RTN circuit open
PSP circuit open or shorted to SIGRTN
PCM damaged.

P1651 - Power Steering Pressure (PSP) Switch Signal Malfunction The PCM counts the number of times vehicle speed transitions from 0 to a calibratable speed. After a calibratable number of speed transitions the PCM expects that the PSP input should have changed. This DTC is set if the transition is not detected. Vehicle towed with engine running
Power steering hydraulic concern was repaired but DTC was not erased
PSP switch/shorting bar damaged
SIG RTN circuit open
PSP circuit open or shorted to SIGRTN
PCM damaged
Check, if possible, if vehicle was towed or power steering service was performed.
Observe PSP V PID while checking wires for intermittents.

P1703 - Brake Switch Out of Self-Test Range Indicates that during Key On Engine Off (KOEO) Self-Test, BPP signal was high. Or during Key On Engine Running (KOER) Self -Test, the BPP signal did not cycle high and low. Open or short in (BPP) circuit
Open or short in stoplamp circuits
Damaged PCM
Malfunction in module(s) connected to BPP circuit (Rear Electronic Module [REM] Windstar and LS6/LS8 and Lighting Control Module (LCM) Continental and Town Car)
Damaged Brake Switch
Misadjusted Brake Switch
Check for proper function of stoplamps. Follow correct Self-Test procedures, refer to Section 2, Quick Test .

P1705 - Transmission Range Sensor Out of Self-Test Range

P1709 - Park/Neutral Position Switch Out of Self-Test Range The DTCs indicate that the voltage is high when it should be low. PNP/CPP circuit short to PWR
Damaged PNP or CPP switch
PNP/CPP circuit open in the SIGRTN
Damaged PCM
When exercising either the PNP or CPP switch the voltage should cycle from 5.0V to low

P1729 - 4x4L Switch Malfunction The 4x4L switch is an ON/OFF. If the PCM does not see low voltage when the switch is ON a DTC will set. 4x4L harness open or shorted
Damaged electronic shift module
Damaged PCM
Verify the 4x4L switch cycles ON/OFF.

P1780 - Transmission Control Switch Out of Self-Test Range During KOER self-test the TCS has to be cycled, if not cycled a DTC is set. TCS circuit short or open
Damaged TCS switch
Damaged PCM
Verify the TCS switch cycles ON/OFF

P1781 - 4x4L Switch Out of Self-Test Range The 4x4L switch is an ON/OFF. If the PCM does not see low voltage when the switch is on a DTC will set. 4x4L harness open or shorted
Damaged electronic shift module
Damaged PCM
Verify the 4x4L switch cycles ON/OFF

P1900 - Output Shaft Speed sensor circuit intermittent failure See DTC P0723

P2195 - STALL AT IDLE AFTER A COLD START

Additional DTC codes:

9202 Fuel Sender Open
9204 Fuel Sender Short to Ground
9213 Anti-Theft Number of Programmed Keys is Below Minimum
A103 Antenna Not Connected / Defective Transceiver
9317 Battery Voltage High
9318 Battery Voltage Low
9342 ECU Is Defective
9356 Ignition RUN Circuit Open
9364 Ignition START Circuit Open
9600 PATS Ignition Key Transponder Signal Is Not Received / Damaged Key or Non-PATS Key
9601 PATS Received Incorrect Key-Code From Ignition Key Transponder (Unprogrammed Encoded Ignition Key)
9602 PATS Received Invalid Format Of Key-Code From Ignition Key Transponder (Partial Key Read)
9681 PATS Transceiver Signal Is Not Received (Not Connected, Damaged, or Wiring)
A103 Antenna Not Connected � Defective Transceiver
A139 PCM ID Does Not Match Between HEC and PCM
A141 NVM Configuration Failure (No PCM ID Exchange Between Instrument Cluster and PCM)
A143 Odometer NVM Memory Failure
5284 Oil Pressure Switch Failure
1197 SELECT/RESET Switch Circuit Failure
D011 SCP (J1850) Invalid or Missing Data for Engine Air Intake
D027 SCP (J1850) Invalid or Missing Data for Engine RPM
D041 SCP (J1850) Invalid or Missing Data for Vehicle Speed
D073 SCP (J1850) Invalid or Missing Data for Engine Coolant
D123 SCP (J1850) Invalid or Missing Data for Odometer
D131 SCP (J1850) Invalid or Missing Data for Fuel System
D132 SCP (J1850) Invalid or Missing Data for Odometer
D147 SCP (J1850) Invalid or Missing Data for Vehicle Security
D148 SCP (J1850) Invalid or Missing Data for Audio Control
D262 Missing SCP Message

P CODE SUMMARY

P0100 Mass Air Flow Circuit Malfunction
P0101 Mass Air Flow Circuit Range/Performance Problem
P0102 MAF Circuit Low Input
P0103 MAF Circuit High Input
P0104 MAF Circuit Intermittent
P0105 MAP/BP Circuit Malfunction
P0106 MAP/BP Sensor Range/Performance Problem
P0107 MAP/BP Sensor Low Input
P0108 MAP/BP Sensor High Input
P0109 MAP/BP Circuit Intermittent
P0110 IAT Circuit Malfunction
P0111 IAT Circuit Range/Performance Problem
P0112 IAT Circuit Low Input
P0113 IAT Circuit High Input
P0114 IAT Circuit Intermittent
P0115 ECT Circuit Malfunction
P0116 ECT Circuit Range/Performance Problem
P0117 ECT Circuit Low Input
P0118 ECT Circuit High Input
P0119 ECT Intermittent
P0120 TP Sensor A Circuit Malfunction
P0121 TP Sensor A Circuit Range/Performance Problem
P0122 TP Sensor A Circuit Low Input
P0123 TP Sensor A Circuit High Input
P0124 TP Sensor A Circuit Intermittent
P0125 Insufficient Coolant Temp For Closed Loop Fuel Control
P0126 Insufficient Coolant Temp For Stable Operation
P0128 Coolant Thermostat Malfunction
P0130 Heated O2 Sensor Circuit Malfunction (Bank 1, Sensor 1)
P0131 Heated O2 Circuit Low Voltage (Bank 1, Sensor 1)
P0132 Heated O2 Sensor Circuit High Voltage (Bank 1, Sensor 1)
P0133 Heated O2 Sensor Circuit Slow Response (Bank 1, Sensor 1)
P0134 Heated O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
P0135 Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P0136 Heated O2 Sensor Circuit Malfunction (Bank 1, Sensor 2)
P0137 Heated O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)
P0138 Heated O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)
P0139 Heated O2 Sensor Circuit Slow Response (Bank 1, Sensor 2)
P0140 Heated O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 2)
P0141 Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0142 Heated O2 Sensor Circuit Malfunction (Bank 1, Sensor 3)
P0143 Heated O2 Sensor Circuit Low Voltage (Bank 1, Sensor 3)
P0144 Heated O2 Sensor Circuit High Voltage (Bank 1, Sensor 3)
P0145 Heated O2 Sensor Circuit Slow Response (Bank 1, Sensor 3)
P0146 Heated O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 3)
P0147 Heated O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 3)
P0150 Heated O2 Sensor Circuit Malfunction (Bank 2, Sensor 1)
P0151 Heated O2 Sensor Circuit Low Voltage (Bank 2, Sensor 1)
P0152 Heated O2 Sensor Circuit High Voltage (Bank 2, Sensor 1)
P0153 Heated O2 Sensor Circuit Slow Response (Bank 2, Sensor 1)
P0154 Heated O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 1)
P0155 Heated O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 1)
P0156 Heated O2 Sensor Circuit Malfunction (Bank 2, Sensor 1)
P0157 Heated O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)
P0158 Heated O2 Sensor Circuit High Voltage (Bank 2, Sensor 2)
P0159 Heated O2 Sensor Circuit Slow Response (Bank 2, Sensor 2)
P0160 Heated O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 2)
P0161 Heated O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 2)
P0170 Fuel Trim Malfunction (Bank 1)
P0171 System Too Lean (Bank 1)
P0172 System Too Rich (Bank 1)
P0173 Fuel Trim Malfunction (Bank 2)
P0174 System Too Lean (Bank 2)
P0175 System Too Rich (Bank 2)
P0176 Fuel Composition Sensor Circuit Fault
P0177 Fuel Composition Sensor Circuit Range/Performance
P0178 Fuel Composition Sensor Circuit Low Input
P0179 Fuel Composition Sensor Circuit High Input
P0180 Fuel Temperature Sensor A Circuit Malfunction
P0181 Fuel Temperature Sensor A Circuit Range/Performance
P0182 Fuel Temperature Sensor A Circuit Low Input
P0183 Fuel Temperature Sensor A Circuit High Input
P0184 Fuel Temperature Sensor A Circuit Intermittent
P0185 Fuel Temperature Sensor B Circuit Malfunction
P0186 Fuel Temperature Sensor B Circuit Range/Performance
P0187 Fuel Temperature Sensor B Circuit Low Input
P0188 Fuel Temperature Sensor B Circuit High Input
P0189 Fuel Temperature Sensor B Circuit Intermittent
P0190 Fuel Rail Pressure Sensor Circuit Malfunction
P0191 Fuel Rail Pressure Sensor Circuit Range/Performance
P0192 Fuel Rail Pressure Sensor Circuit Low Input
P0193 Fuel Rail Pressure Sensor Circuit High Input
P0195 Engine Oil Temperature Sensor Circuit Malfunction
P0196 Engine Oil Temperature Sensor Range/Performance
P0197 Engine Oil Temperature Sensor Low
P0198 Engine Oil Temperature Sensor High
P0199 Engine Oil Temperature Sensor Intermittent
P0200 Injector Circuit Malfunction
P0201 Injector Circuit Malfunction - Cylinder #1
P0202 Injector Circuit Malfunction - Cylinder #2
P0203 Injector Circuit Malfunction - Cylinder #3
P0204 Injector Circuit Malfunction - Cylinder #4
P0205 Injector Circuit Malfunction - Cylinder #5
P0206 Injector Circuit Malfunction - Cylinder #6
P0207 Injector Circuit Malfunction - Cylinder #7
P0208 Injector Circuit Malfunction - Cylinder #8
P0209 Injector Circuit Malfunction - Cylinder #9
P0210 Injector Circuit Malfunction - Cylinder #10
P0211 Injector Circuit Malfunction - Cylinder #11
P0212 Injector Circuit Malfunction - Cylinder #12
P0213 Cold Start Injector #1 Malfunction
P0214 Cold Start Injector #2 Malfunction
P0215 Engine Shutoff Solenoid Malfunction
P0216 Injection Timing Control Circuit Malfunction
P0217 Engine Overtemp Condition
P0218 Transmission Overtemp Condition
P0219 Engine Overspeed Condition
P0220 Throttle/Pedal Position Sensor/Switch B Circuit Malfunction
P0221 Throttle/Pedal Position Sensor/Switch B Performance Problem
P0222 Throttle Position Sensor B Circuit Low Input
P0223 Throttle Position Sensor B Circuit High Input
P0224 Throttle Position Sensor B Intermittent
P0225 Throttle Position Sensor C Circuit Malfunction
P0227 Throttle Position Sensor C Circuit Low Input
P0228 Throttle Position Sensor C Circuit High Input
P0229 Throttle Position Sensor C Intermittent
P0230 Fuel Pump Primary Circuit Malfunction
P0231 Fuel Pump Secondary Circuit Low
P0232 Fuel Pump Secondary Circuit High
P0233 Fuel Pump Secondary Circuit Intermittent
P0234 Engine Overboost Condition
P0235 Turbocharger Boost Sensor A Circuit Malfunction
P0236 Turbocharger Boost Sensor A Performance
P0237 Turbocharger Boost Sensor A Circuit Low
P0238 Turbocharger Boost Sensor A Circuit High
P0239 Turbocharger Boost Sensor B Circuit Malfunction
P0240 Turbocharger Boost Sensor B Circuit Range/Performance
P0241 Turbocharger Boost Sensor B Circuit Low
P0242 Turbocharger Boost Sensor B Circuit High
P0243 Wastegate Solenoid A Malfunction
P0244 Wastegate Solenoid A Range/Performance
P0245 Wastegate Solenoid A Low
P0246 Wastegate Solenoid A High
P0247 Wastegate Solenoid B Malfunction
P0248 Wastegate Solenoid B Range/Performance
P0249 Wastegate Solenoid B Low
P0250 Wastegate Solenoid B High
P0251 Injection Pump Fuel Metering Control A Malfunction
P0252 Injection Pump Fuel Metering Control A Range/Performance
P0253 Injection Pump Fuel Metering Control A Low
P0254 Injection Pump Fuel Metering Control A High
P0255 Injection Pump Fuel Metering Control A Intermittent
P0256 Injection Pump Fuel Metering Control B Malfunction
P0257 Injection Pump Fuel Metering Control B Range/Performance
P0258 Injection Pump Fuel Metering Control B Low
P0259 Injection Pump Fuel Metering Control B High
P0260 Injection Pump Fuel Metering Control B Intermittent
P0261 Injector Circuit Low - Cylinder #1
P0262 Injector Circuit High - Cylinder #1
P0263 Cylinder #1 Balance Fault
P0264 Injector Circuit Low - Cylinder #2
P0265 Injector Circuit High - Cylinder #2
P0266 Cylinder #2 Balance Fault
P0267 Injector Circuit Low - Cylinder #3
P0268 Injector Circuit High - Cylinder #3
P0269 Cylinder #3 Balance Fault
P0270 Injector Circuit Low - Cylinder #4
P0271 Injector Circuit High - Cylinder #4
P0272 Cylinder #4 Balance Fault
P0273 Injector Circuit Low - Cylinder #5
P0274 Injector Circuit High - Cylinder #5
P0275 Cylinder #5 Balance Fault
P0276 Injector Circuit Low - Cylinder #6
P0277 Injector Circuit High - Cylinder #6
P0278 Cylinder #6 Balance Fault
P0279 Injector Circuit Low - Cylinder #7
P0280 Injector Circuit High - Cylinder #7
P0281 Cylinder #7 Balance Fault
P0282 Injector Circuit Low - Cylinder #8
P0283 Injector Circuit High - Cylinder #8
P0284 Cylinder #8 Balance Fault
P0285 Injector Circuit Low - Cylinder #9
P0286 Injector Circuit High - Cylinder #9
P0287 Cylinder #9 Balance Fault
P0288 Injector Circuit Low - Cylinder #10
P0289 Injector Circuit High - Cylinder #10
P0290 Cylinder #10 Balance Fault
P0291 Injector Circuit Low - Cylinder #11
P0292 Injector Circuit High - Cylinder #11
P0293 Cylinder #11 Balance Fault
P0294 Injector Circuit Low - Cylinder #12
P0295 Injector Circuit High - Cylinder #12
P0296 Cylinder #12 Balance Fault
P0300 Random Misfire Detected
P0301 Cylinder #1 Misfire Detected
P0302 Cylinder #2 Misfire Detected
P0303 Cylinder #3 Misfire Detected
P0304 Cylinder #4 Misfire Detected
P0305 Cylinder #5 Misfire Detected
P0306 Cylinder #6 Misfire Detected
P0307 Cylinder #7 Misfire Detected
P0308 Cylinder #8 Misfire Detected
P0309 Cylinder #9 Misfire Detected
P0310 Cylinder #10 Misfire Detected
P0311 Cylinder #11 Misfire Detected
P0312 Cylinder #12 Misfire Detected
P0320 Ignition Engine Speed Input Circuit Malfunction
P0321 Ignition Engine Speed Input Circuit Range/Performance
P0322 Ignition Engine Speed Input Circuit No Signal
P0323 Ignition Engine Speed Input Circuit Intermittent
P0325 Knock Sensor 1 Circuit Malfunction
P0326 Knock Sensor 1 Circuit Range/Performance
P0327 Knock Sensor 1 Circuit Low Input
P0328 Knock Sensor 1 Circuit High Input
P0329 Knock Sensor 1 Circuit Intermittent
P0330 Knock Sensor 2 Circuit Malfunction
P0331 Knock Sensor 2 Circuit Range/Performance
P0332 Knock Sensor 2 Circuit Low Input
P0333 Knock Sensor 2 Circuit High Input
P0334 Knock Sensor 2 Circuit Intermittent
P0335 Crankshaft Position Sensor A Circuit Malfunction
P0336 Crankshaft Position Sensor A Circuit Range/Performance
P0337 Crankshaft Position Sensor A Circuit Low Input
P0338 Crankshaft Position Sensor A Circuit High Input
P0339 Crankshaft Position Sensor A Circuit Intermittent
P0340 Camshaft Position Sensor Circuit Malfunction
P0341 Camshaft Position Sensor Circuit Performance
P0342 Camshaft Position Sensor Circuit Low Input
P0343 Camshaft Position Sensor Circuit High Input
P0344 Camshaft Position Sensor Circuit Intermittent
P0350 Ignition Coil Primary / Secondary Circuit Malfunction
P0351 Ignition Coil Primary A / Secondary Circuit Malfunction
P0352 Ignition Coil Primary B / Secondary Circuit Malfunction
P0353 Ignition Coil Primary C / Secondary Circuit Malfunction
P0354 Ignition Coil Primary D / Secondary Circuit Malfunction
P0355 Ignition Coil Primary E / Secondary Circuit Malfunction
P0356 Ignition Coil Primary F / Secondary Circuit Malfunction
P0357 Ignition Coil Primary G / Secondary Circuit Malfunction
P0358 Ignition Coil Primary H / Secondary Circuit Malfunction
P0359 Ignition Coil Primary I / Secondary Circuit Malfunction
P0360 Ignition Coil Primary J / Secondary Circuit Malfunction
P0361 Ignition Coil Primary K / Secondary Circuit Malfunction
P0362 Ignition Coil Primary L / Secondary Circuit Malfunction
P0370 Timing Reference High Resolution Signal A Malfunction
P0371 Timing Reference High Resolution Signal A Too Many Pulses
P0372 Timing Reference High Resolution Signal A Too Few Pulses
P0373 Timing Reference High Resolution Signal A Intermittent
P0374 Timing Reference High Resolution Signal A No Pulses
P0375 Timing Reference High Resolution Signal B Malfunction
P0376 Timing Reference High Resolution Signal B Too Many Pulses
P0377 Timing Reference High Resolution Signal B Too Few Pulses
P0378 Timing Reference High Resolution Signal B Intermittent
P0379 Timing Reference High Resolution Signal B No Pulses
P0380 Glow Plug Circuit A Malfunction
P0381 Glow Plug Indicator Circuit Malfunction
P0382 Glow Plug Circuit B Malfunction
P0385 Crankshaft Position Sensor B Circuit Malfunction
P0386 Crankshaft Position Sensor B Circuit Range/Performance
P0387 Crankshaft Position Sensor B Circuit Low Input
P0388 Crankshaft Position Sensor B Circuit High Input
P0389 Crankshaft Position Sensor B Circuit Intermittent
P0400 EGR Flow Malfunction
P0401 EGR Flow Insufficient Detected
P0402 EGR Flow Excessive Detected
P0403 EGR Circuit Malfunction
P0404 EGR Circuit Range/Performance
P0405 EGR Sensor A Circuit Low Input
P0406 EGR Sensor A Circuit High Input
P0407 EGR Sensor B Circuit Low Input
P0408 EGR Sensor B Circuit High Input
P0410 SAI System Malfunction
P0411 SAI System Incorrect Upstream Flow Detected
P0412 SAI System Switching Valve A Circuit Malfunction
P0413 SAI System Switching Valve A Circuit Open
P0414 SAI System Switching Valve A Circuit Shorted
P0415 SAI System Switching Valve B Circuit Malfunction
P0416 SAI System Switching Valve B Circuit Open
P0417 SAI System Switching Valve B Circuit Shorted
P0418 SAI System Relay A Circuit Malfunction
P0419 SAI System Relay B Circuit Malfunction
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0422 Main Catalyst Efficiency Below Threshold (Bank 1)
P0423 Heated Catalyst Efficiency Below Threshold (Bank 1)
P0424 Heated Catalyst Temperature Below Threshold (Bank 1)
P0426 Catalyst Temperature Sensor Range/Performance (Bank 1)
P0427 Catalyst Temperature Sensor Low Input (Bank 1)
P0428 Catalyst Temperature Sensor High Input (Bank 1)
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)
P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
P0433 Heated Catalyst Efficiency Below Threshold (Bank 2)
P0434 Heated Catalyst Temperature Below Threshold (Bank 2)
P0436 Catalyst Temperature Sensor Range/Performance (Bank 2)
P0437 Catalyst Temperature Sensor Low Input (Bank 2)
P0438 Catalyst Temperature Sensor High Input (Bank 2)
P0440 Evaporative Emission Control System Malfunction
P0441 Evaporative Emission Control System Incorrect Purge Flow
P0442 Evaporative Emission Control System Leak Detected
P0443 Evap Emission Control System Purge Control Circuit Malf.
P0444 Evap Emission Control Sys Purge Control Valve Circuit Open
P0445 Evap Emission Control Sys Purge Control Valve Circuit Short
P0446 Evap Emission Control System Vent Malfunction
P0447 Evap Emission Control System Vent Circuit Open
P0448 Evap Emission Control System Vent Circuit Shorted
P0449 Evap Emission Control System Vent Circuit Intermittent
P0450 Evap Emission Control System Pressure Sensor Malfunction
P0451 Evap Emission Control System Pressure Sensor Performance
P0452 Evap Emission Control System Pressure Sensor Low Input
P0453 Evap Emission Control System Pressure Sensor High Input
P0454 Evap Emission Control System Pressure Sensor Intermittent
P0455 Evap Emission Control System Leak Detected (Gross Leak/No Flow)
P0460 Fuel Level Sensor Circuit Malfunction
P0461 Fuel Level Sensor Circuit Range/Performance
P0462 Fuel Level Sensor Circuit Low Input
P0463 Fuel Level Sensor Circuit High Input
P0464 Fuel Level Sensor Circuit Intermittent
P0465 Purge Flow Sensor Circuit Malfunction
P0466 Purge Flow Sensor Circuit Range/Performance
P0467 Purge Flow Sensor Circuit Low Input
P0468 Purge Flow Sensor Circuit High Input
P0469 Purge Flow Sensor Circuit Intermittent
P0470 Exhaust Pressure Sensor Circuit Malfunction
P0471 Exhaust Pressure Sensor Circuit Range/Performance
P0472 Exhaust Pressure Sensor Low
P0473 Exhaust Pressure Sensor High
P0474 Exhaust Pressure Sensor Intermittent
P0475 Exhaust Pressure Control Valve Malfunction
P0476 Exhaust Pressure Control Valve Performance
P0477 Exhaust Pressure Control Valve Low
P0478 Exhaust Pressure Control Valve High
P0479 Exhaust Pressure Control Valve Intermittent
P0480 Cooling Fan 1 Control Circuit Malfunction
P0481 Cooling Fan 2 Control Circuit Malfunction
P0482 Cooling Fan 3 Control Circuit Malfunction
P0483 Cooling Fan Rationality Check Malfunction
P0484 Cooling Fan Circuit Over Current
P0485 Cooling Fan Power/Ground Circuit Malfunction
P0500 Vehicle Speed Sensor Malfunction
P0501 Vehicle Speed Sensor Range/Performance
P0502 Vehicle Speed Sensor Low Input
P0503 Vehicle Speed Sensor Intermittent
P0505 Idle Air Control System Malfunction
P0506 Idle Air Control System RPM Lower Than Expected
P0507 Idle Air Control System RPM Higher Than Expected
P0510 Closed Throttle Position Switch Malfunction
P0520 Engine Oil Pressure Sensor/Switch Circuit Malfunction
P0521 Engine Oil Pressure Sensor/Switch Circuit Range/Performance
P0522 Engine Oil Pressure Sensor/Switch Circuit Low Input
P0523 Engine Oil Pressure Sensor/Switch Circuit High Input
P0530 A/C Refrigerant Pressure Sensor Circuit Malfunction
P0531 A/C Refrigerant Pressure Sensor Circuit Range/Performance
P0532 A/C Refrigerant Pressure Sensor Circuit Low Input
P0533 A/C Refrigerant Pressure Sensor Circuit High Input
P0534 A/C Refrigerant Charge Loss
P0550 Power Steering Pressure Sensor Circuit Malfunction
P0551 Power Steering Pressure Sensor Circuit Range/Performance
P0552 Power Steering Pressure Sensor Circuit Low Input
P0553 Power Steering Pressure Sensor Circuit High Input
P0554 Power Steering Pressure Sensor Circuit Intermittent
P0560 System Voltage Malfunction
P0561 System Voltage Unstable
P0562 System Voltage Low
P0563 System Voltage High
P0565 Cruise ON Signal Malfunction
P0566 Cruise OFF Signal Malfunction
P0567 Cruise RESUME Signal Malfunction
P0568 Cruise SET Signal Malfunction
P0569 Cruise COAST Signal Malfunction
P0570 Cruise ACCEL Signal Malfunction
P0571 Cruise Brake Switch Circuit Malfunction
P0572 Cruise Brake Switch Circuit Low
P0573 Cruise Brake Switch Circuit High
P0600 Serial Communications Link Malfunction
P0601 Internal Control Module Memory Check Sum Error
P0602 Control Module Programming Error
P0603 Powertrain Control Module KAM Test Error
P0604 Powertrain Control Module RAM Test Error
P0605 Powertrain Control Module ROM Test Error
P0606 PCM Processor Fault
P0608 PCM VSS Output A Malfunction
P0609 PCM VSS Output B Malfunction
P0620 Generator Control Circuit Malfunction
P0621 Generator Lamp "L" Control Circuit Malfunction
P0622 Generator Field "F" Control Circuit Malfunction
P0650 MIL Control Circuit Malfunction
P0700 Transmission Control System Malfunction
P0701 Transmission Control System Range/Performance
P0702 Transmission Control System Electrical
P0703 Brake Switch Input Malfunction
P0704 Clutch Switch Input Circuit Malfunction
P0705 Transmission Range Sensor Circuit Malfunction
P0706 Transmission Range Sensor Circuit Range/Performance
P0707 Transmission Range Sensor Circuit Low Input
P0708 Transmission Range Sensor Circuit High Input
P0709 Transmission Range Sensor Circuit Intermittent
P0710 Transmission Fluid Temperature Sensor Circuit Malfunction
P0711 Transmission Fluid Temperature Sensor Circuit Range/Perf
P0712 Transmission Fluid Temp Sensor Circuit Low Input
P0713 Transmission Fluid Temp Sensor Circuit High Input
P0714 Transmission Fluid Temp Sensor Circuit Intermittent
P0715 Turbine Speed Sensor Circuit Malfunction
P0716 Turbine Speed Sensor Circuit Range/Performance
P0717 Turbine Speed Sensor Circuit No Signal
P0718 Turbine Speed Sensor Circuit Intermittent
P0719 Torque Converter/Brake Switch B Circuit Low
P0720 Output Shaft Speed Sensor Circuit Malfunction
P0721 Output Shaft Speed Sensor No Performance
P0722 Output Shaft Speed Sensor No Signal
P0723 Output Shaft Speed Sensor Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725 Engine Speed Input Circuit Malfunction
P0726 Engine Speed Input Circuit Range/Performance
P0727 Engine Speed Input Circuit No Signal
P0728 Engine Speed Input Circuit Intermittent
P0730 Incorrect Gear Ratio

P CODE SUMMARY CONTINUED

P0731 Gear 1 Incorrect Ratio
P0732 Gear 2 Incorrect Ratio
P0733 Gear 3 Incorrect Ratio
P0734 Gear 4 Incorrect Ratio
P0735 Gear 5 Incorrect Ratio
P0736 Reverse Incorrect Ratio
P0740 Torque Converter Clutch Circuit Malfunction
P0741 Torque Converter Clutch System Performance Or Stuck Off
P0742 Torque Converter Clutch Circuit Stuck On
P0743 Torque Converter Clutch System Electrical
P0744 Torque Converter Clutch Circuit Intermittent
P0745 Pressure Control Solenoid A Malfunction
P0746 Pressure Control Solenoid A Performance or Stuck Off
P0747 Pressure Control Solenoid A Stuck On
P0748 Pressure Control Solenoid A Electrical
P0749 Pressure Control Solenoid A Intermittent
P0750 Shift Solenoid A Malfunction
P0751 Shift Solenoid A Performance
P0752 Shift Solenoid A Stuck On
P0753 Shift Solenoid A Electrical
P0754 Shift Solenoid A Intermittent
P0755 Shift Solenoid B Malfunction
P0756 Shift Solenoid B Performance
P0757 Shift Solenoid B Stuck On
P0758 Shift Solenoid B Electrical
P0759 Shift Solenoid B Intermittent
P0760 Shift Solenoid C Malfunction
P0761 Shift Solenoid C Performance
P0762 Shift Solenoid C Stuck On
P0763 Shift Solenoid C Electrical
P0764 Shift Solenoid C Intermittent
P0765 Shift Solenoid D Malfunction
P0766 Shift Solenoid D Performance
P0767 Shift Solenoid D Stuck On
P0768 Shift Solenoid D Electrical
P0769 Shift Solenoid D Intermittent
P0770 Shift Solenoid E Malfunction
P0771 Shift Solenoid E Performance
P0772 Shift Solenoid E Stuck On
P0773 Shift Solenoid E Electrical
P0774 Shift Solenoid E Intermittent
P0775 Pressure Control Solenoid B Malfunction
P0776 Pressure Control Solenoid B Performance
P0777 Pressure Control Solenoid B Stuck On
P0778 Pressure Control Solenoid B Electrical
P0779 Pressure Control Solenoid B Intermittent
P0780 Shift Malfunction
P0781 1 - 2 Shift Error
P0782 2 - 3 Shift Error
P0783 3 - 4 Shift Error
P0784 4 - 5 Shift Error
P0785 Shift/Timing Solenoid Malfunction
P0786 Shift/Timing Solenoid Range/Performance
P0787 Shift/Timing Solenoid Low
P0788 Shift/Timing Solenoid High
P0789 Shift/Timing Solenoid Intermittent
P0790 Mode Switch Circuit Malfunction
P0801 Reverse Inhibit Control Circuit Malfunction
P0803 1 - 4 Upshift (Skip Shift) Solenoid Circuit Malfunction
P0804 1 - 4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
P1000 Check of all OBDII Systems Not Complete
P1001 KOER Not Able To Complete. KOER Aborted.
P1100 MAF Sensor Intermittent
P1101 MAF Sensor Out Of Self Test Range
P1102 MAF Sensor In Range But Lower Than Expected
P1103 MAF Sensor In Range But Higher Than Expected
P1104 MAF Ground Malfunction
P1105 Dual Alternator Upper Fault
P1106 Dual Alternator Lower Fault
P1107 Dual Alternator Lower Circuit Malfunction
P1108 Dual Alternator Battery Lamp Circuit Malfunction
P1109 IAT - B Sensor Intermittent
P1110 IAT Sensor (D/C) Open/Short
P1111 System Pass
P1112 IAT Sensor Intermittent
P1113 IAT Sensor (L/C) Open/Short
P1114 IAT - B Circuit Low Input
P1115 IAT - B Circuit High Input
P1116 ECT Sensor Out Of Self Test Range
P1117 ECT Sensor Intermittent
P1118 Manifold Absolute Temperature Circuit Low Input
P1119 Manifold Absolute Temperature Circuit High Input
P1120 TP Sensor Out Of Range Low (Ratch Too Low)
P1121 TP Sensor Inconsistent With MAF Sensor
P1122 TP In Range But Lower Than Expected
P1123 TP In Range But Higher Than Expected
P1124 TP Sensor Out Of Self Test Range
P1125 TP Sensor Intermittent
P1126 TP (Narrow Range) Sensor Circuit Malfunction
P1127 Exhaust Not Warm, Downstream O2 Sensor Not Tester
P1128 Upstream Heated O2 Sensors Swapped
P1129 Downstream Heated O2 Sensors Swapped
P1130 Lack Of HO2S11 Switch - Adaptive Fuel At Limit
P1131 Lack Of HO2S11 Switch - Sensor Indicates Lean
P1132 Lack Of HO2S11 Switch - Sensor Indicates Rich
P1133 Bank 1 Fuel Control Shifted Lean (FAOSC)
P1134 Bank 1 Fuel Control Shifted Rich (FAOSC)
P1135 Pedal Position Sensor A Circuit Intermittent
P1136 Control Box Fan Circuit Malfunction
P1137 Lack Of HO2S12 Switch - Sensor Indicates Lean
P1138 Lack Of HO2S12 Switch - Sensor Indicates Rich
P1139 Water In Fuel Indicator Circuit Malfunction
P1140 Water In Fuel Condition
P1141 Fuel Restriction Indicator Circuit Malfunction
P1142 Fuel Restriction Condition
P1143 Air Assist Control Valve Range/Performance
P1144 Air Assist Control Valve Circuit Malfunction
P1150 Lack Of HO2S21 Switch - Adaptive Fuel At Limit
P1151 Lack Of HO2S21 Switch - Sensor Indicates Lean
P1152 Lack Of HO2S21 Switch - Sensor Indicates Rich
P1153 Bank 2 Fuel Control Shifted Lean (FAOSC)
P1154 Bank 2 Fuel Control Shifted Rich (FAOSC)
P1155 Alternative Fuel Controller Has Activated the MIL
P1156 Fuel Select Switch Malfunction
P1157 Lack Of HO2S22 Switch - Sensor Indicates Lean
P1158 Lack Of HO2S22 Switch - Sensor Indicates Rich
P1159 Fuel Stepper Motor Malfunction
P1167 Invalid Test, Operator Did Not Actuate Throttle
P1168 Fuel Rail Sensor In-Range Low Failure
P1169 Fuel Rail Sensor In-Range High Failure
P1170 ESO - Engine Shut Off Solenoid Fault
P1171 Rotor Sensor Fault
P1172 Rotor Control Fault
P1173 Rotor Calibration Fault
P1174 Cam Sensor Fault
P1175 Cam Control Fault
P1176 Cam Calibration Fault
P1177 Synchronisation Fault
P1178 Boltup Limits Fault
P1180 Fuel Delivery System Malfunction - Low
P1181 Fuel Delivery System Malfunction - High
P1182 Fuel Shut Off Solenoid Malfunction
P1183 Engine Oil Temperature Circuit Malfunction
P1184 Engine Oil Temperature Out Of Self Test Range
P1185 FTS High - Fuel Pump Temperature Sensor High
P1186 FTS Low - Fuel Pump Temperature Sensor Low
P1187 Variant Selection
P1188 Calibration Memory Fault
P1189 Pump Speed Signal Fault
P1190 Calibration Resistor Out Of Range
P1191 Key Line Voltage
P1192 V External
P1193 EGR Drive Overcurrent
P1194 ECU A/D Converter
P1195 SCP HBCC Failed To Initialize
P1196 Key Off Voltage High
P1197 Key Off Voltage Low
P1198 Pump Rotor Control Underfueling
P1199 Fuel Level Input Circuit Low
P1201 Injector Circuit Open / Shorted - Cylinder #1
P1202 Injector Circuit Open / Shorted - Cylinder #2
P1203 Injector Circuit Open / Shorted - Cylinder #3
P1204 Injector Circuit Open / Shorted - Cylinder #4
P1205 Injector Circuit Open / Shorted - Cylinder #5
P1206 Injector Circuit Open / Shorted - Cylinder #6
P1209 Injector Control Pressure System Fault
P1210 Injector Control Pressure Above Expected Level
P1211 Injector Control Pressure Sensor Above / Below Desired
P1212 Injector Control Pressure Not Detected During Crank
P1213 Start Injector Circuit Malfunction
P1214 Pedal Position Sensor B Circuit Intermittent
P1215 Pedal Position Sensor C Circuit Low Input
P1216 Pedal Position Sensor C Circuit High Input
P1217 Pedal Position Sensor C Circuit Intermittent
P1218 CID High
P1219 CID Low
P1220 Series Throttle Control System Malfunction
P1221 Traction Control System Malfunction
P1222 Traction Control Output Circuit Malfunction
P1223 Pedal Demand Sensor B Circuit High Input
P1224 Throttle Position Sensor B Out Of Self Test Range
P1225 Needle Lift Sensor Malfunction
P1226 Control Sleeve Sensor Malfunction
P1227 Wastegate Failed Closed (Over Pressure)
P1228 Wastegate Failed Open (Under Pressure)
P1229 Intercooler Pump Driver Fault
P1230 Fuel Pump Low Speed Malfunction
P1231 Fuel Pump Secondary Circuit Low, High Speed
P1232 Fuel Pump Speed Primary Circuit Malfunction
P1233 Fuel Pump Driver Module Off Line
P1234 Fuel Pump Driver Module Off Line
P1235 Fuel Pump Control Out Of Range
P1236 Fuel Pump Control Out Of Range
P1237 Fuel Pump Secondary Circuit Malfunction
P1238 Fuel Pump Secondary Circuit Malfunction
P1239 Speed Fuel Pump Positive Feed Fault
P1240 Sensor Power Supply Malfunction
P1241 Sensor Power Supply Low Input
P1242 Sensor Power Supply High Input
P1243 Second Fuel Pump Faulty or Ground Fault
P1244 Alternator Load Input Failed High
P1245 Alternator Load Input Failed Low
P1246 Alternator Load Input Failed
P1247 Turbo Boost Pressure Low
P1248 Turbo Boost Pressure Not Detected
P1249 Wastegate Control Valve Performance
P1250 PRC Solenoid Circuit Malfunction
P1251 Air Mixture Solenoid Circuit Malfunction
P1252 Pedal Correlation PDS1 and LPDS High
P1253 Pedal Correlation PDS1 and LPDS Low
P1254 Pedal Correlation PDS2 and LPDS High
P1255 Pedal Correlation PDS2 and LPDS Low
P1256 Pedal Correlation PDS1 and HPDS
P1257 Pedal Correlation PDS2 and HPDS
P1258 Pedal Correlation PDS1 and PDS2
P1259 Immobilizer to PCM Signal Error
P1260 THEFT Detected, Vehicle Immobilzed
P1261 Cylinder #1 High To Low Side Short
P1262 Cylinder #2 High To Low Side Short
P1263 Cylinder #3 High To Low Side Short
P1264 Cylinder #4 High To Low Side Short
P1265 Cylinder #5 High To Low Side Short
P1266 Cylinder #6 High To Low Side Short
P1267 Cylinder #7 High To Low Side Short
P1268 Cylinder #8 High To Low Side Short
P1269 Immobilizer Code Not Programmed
P1270 Engine RPM Or Speed Limiter Reached
P1271 Cylinder #1 High To Low Side Open
P1272 Cylinder #2 High To Low Side Open
P1273 Cylinder #3 High To Low Side Open
P1274 Cylinder #4 High To Low Side Open
P1275 Cylinder #5 High To Low Side Open
P1276 Cylinder #6 High To Low Side Open
P1277 Cylinder #7 High To Low Side Open
P1278 Cylinder #8 High To Low Side Open
P1280 Injection Control Pressure Out Of Range Low
P1281 Injection Control Pressure Out Of Range High
P1282 Excessive Injection Control Pressure
P1283 IPR Circuit Failure
P1284 Aborted KOER - ICP Failure
P1285 Cylinder Head Overtemperature Sensed
P1286 Fuel Pulse In Range But Lower Than Expected
P1287 Fuel Pulse In Range But Higher Than Expected
P1288 Cylinder Head Temp Sensor Out Of Self Test Range
P1289 Cylinder Head Temp Sensor High Input
P1290 Cylinder Head Temp Sensor Low Input
P1291 Injector High Side Short To GND Or VBATT - Bank 1
P1292 Injector High Side Short To GND Or VBATT - Bank 2
P1293 Injector High Side Open - Bank 1
P1294 Injector High Side Open - Bank 2
P1295 Multi-faults - Bank 1 - With Low Side Shorts
P1296 Multi-faults - Bank 2 - With Low Side Shorts
P1297 Injector High Sides Shorted Together
P1298 IDM Failure
P1299 Cylinder Head Overtemperature Protection Active
P1300 Boost Calibration Fault
P1301 Boost Calibration High
P1302 Boost Calibration Low
P1303 EGR Calibration Fault
P1304 EGR Calibration High
P1305 EGR Calibration Low
P1306 Kickdown Relay Pull - In Circuit Fault
P1307 Kickdown Relay Hold Circuit Fault
P1308 A/C Clutch Circuit Fault
P1309 Misfire Monitor AICE Chip Fault
P1313 Misfire Rate Catalyst Damage Fault - Bank 1
P1314 Misfire Rate Catalyst Damage Fault - Bank 2
P1315 Persistent Misfire
P1316 Injector Circuit / IDM Codes Detected
P1317 Injector Circuit / IDM Codes Not Updated
P1336 Crank / Cam Sensor Range / Performance
P1340 Camshaft Position Sensor B Circuit Malfunction
P1341 Camshaft Position Sensor B Range / Performance
P1345 SGC (Cam Position) Sensor Circuit Malfunction
P1346 Fuel Level Sensor B Circuit Malfunction
P1347 Fuel Level Sensor B Range / Performance
P1348 Fuel Level Sensor B Circuit Low
P1349 Fuel Level Sensor B Circuit High
P1350 Fuel Level Sensor B Intermittent
P1351 IDM Input Circuit Malfunction
P1352 Ignition Coil A Primary Circuit Malfunction
P1353 Ignition Coil B Primary Circuit Malfunction
P1354 Ignition Coil C Primary Circuit Malfunction
P1355 Ignition Coil D Primary Circuit Malfunction
P1356 IDM Pulsewidth Indicates Engine Not Turning
P1357 IDM Pulsewidth Not Defined
P1358 IDM Signal Out Of Self Test Range (No CPUOK)
P1359 Spark Output Circuit Malfunction
P1360 Ignition Coil A Secondary Circuit Malfunction
P1361 Ignition Coil B Secondary Circuit Malfunction
P1362 Ignition Coil C Secondary Circuit Malfunction
P1363 Ignition Coil D Secondary Circuit Malfunction
P1364 Ignition Coil Primary Circuit Failure
P1365 Ignition Coil Secondary Circuit Failure
P1366 Ignition Spare
P1367 Ignition Spare
P1368 Ignition Spare
P1369 Engine Temperature Light Monitor Failure
P1370 Insufficient RMP Increase During Spark Test
P1371 Ignition Coil - Cylinder 1 - Early Activation Fault
P1372 Ignition Coil - Cylinder 2 - Early Activation Fault
P1373 Ignition Coil - Cylinder 3 - Early Activation Fault
P1374 Ignition Coil - Cylinder 4 - Early Activation Fault
P1375 Ignition Coil - Cylinder 5 - Early Activation Fault
P1376 Ignition Coil - Cylinder 6 - Early Activation Fault
P1380 Variable Cam Timing Solenoid A Malfunction
P1381 Variable Cam Timing Overadvanced (Bank #1)
P1382 Variable Cam Timing Solenoid #1 Circuit Malfunction
P1383 Variable Cam Timing Overretarded (Bank #1)
P1384 VVT Solenoid A Malfunction
P1385 Variable Cam Timing Solenoid B Malfunction
P1386 Variable Cam Timing Overadvanced (Bank #2)
P1387 Variable Cam Timing Solenoid #2 Circuit Malfunction
P1388 Variable Cam Timing Overretarded (Bank #2)
P1389 Glow Plug Circuit High Side Low Input
P1390 Octane Adjust Pin Out Of Self Test Range
P1391 Glow Plug Circuit Low Input (Bank #1)
P1392 Glow Plug Circuit High Input (Bank #1)
P1393 Glow Plug Circuit Low Input (Bank #2)
P1394 Glow Plug Circuit High Input (Bank #2)
P1395 Glow Plug Monitor Fault (Bank #1)
P1396 Glow Plug Monitor Fault (Bank #2)
P1397 System Voltage Out Of Self Test Range
P1398 VVT Solenoid B Circuit High Input
P1399 Glow Plug Circuit High Side, High Input
P14 Seat Position Hall Sensor Feedback Failure
P1400 DPFE Circuit Low Input
P1401 DPFE Circuit High Input
P1402 EGR Metering Orifice Restricted
P1403 DPFE Sensor Hoses Reversed
P1404 IAT - B Circuit Malfunction
P1405 DPFE Sensor Upstream Hose Off Or Plugged
P1406 DPFE Sensor Downstream Hose Off Or Plugged
P1407 EGR No Flow Detected
P1408 EGR Flow Out Of Self Test Range
P1409 EVR Control Circuit Malfunction
P1411 SAI System Incorrect Downstream Flow Detected
P1413 SAI System Monitor Circuit Low Input
P1414 SAI System Monitor Circuit High Input
P1415 Air Pump Circuit Malfunction
P1416 Port Air Circuit Malfunction
P1417 Port Air Relief Circuit Malfunction
P1418 Split Air #1 Circuit Malfunction
P1419 Split Air #2 Circuit Malfunction
P1420 Catalyst Temperature Sensor Failure
P1421 Catalyst Damage
P1422 EGI Temperature Sensor Failure
P1423 EGI Functionality Test Failed
P1424 EGI Glow Plug Primary Failure
P1425 EGI Glow Plug Secondary Failure
P1426 EGI Mini - MAF Failed Out Of Range
P1427 EGI Mini - MAF Failed Short Circuit
P1428 EGI Mini - MAF Failed Open Circuit
P1429 Electric Air Pump Primary Failure
P1430 Electric Air Pump Secondary Failure
P1433 A/C Refrigerant Temperature Circuit Low
P1434 A/C Refrigerant Temperature Circuit High
P1435 A/C Refrigerant Temperature Circuit Range/Performance
P1436 A/C Evaporator Air Temperature Circuit Low
P1437 A/C Evaporator Air Temperature Circuit High
P1438 A/C Evaporator Air Temperature Circuit Range/Performance
P1439 Floor Temperature Switch Circuit Malfunction
P1440 Purge Valve Stuck Open
P1441 ELC System Fault
P1442 Evaporative Emission Control System Leak Detected
P1443 Evaporative Emission Control System Control Valve Malf.
P1444 Purge Flow Sensor Circuit Low Input
P1445 Purge Flow Sensor Circuit High Input
P1446 Evaporative Vac Solenoid Circuit Malfunction
P1447 ELC System Closure Valve Flow Fault
P1448 ELC System 2 Fault
P1449 Evaporative Check Solenoid Circuit Malfunction
P1450 Unable To Bleed Up Fuel Tank Vacuum
P1451 Evap. Emission Control Sys. Vent Control Valve Circuit Malf.
P1452 Unable To Bleed - Up Vacuum in Tank
P1453 Fuel Tank Pressure Relief Valve Malfunction
P1454 Evaporative System Vacuum Test Malfunction
P1455 Evap. Emission Control Sys. Leak Detected (Gross Leak/No Flow)
P1456 Fuel Tank Temperature Sensor Circuit Malfunction
P1457 Unable To Pull Vacuum In Tank
P1460 WOT A/C Cutout Circuit Malfunction
P1461 A/C Pressure Sensor Circuit High Input
P1462 A/C Pressure Sensor Circuit Low Input
P1463 A/C Pressure Sensor Insufficient Pressure Change
P1464 A/C Demand Out of Self Test Range
P1465 A/C Relay Circuit Malfunction
P1466 A/C Refrigerant Temperature Sensor/Circuit Malfunction
P1467 A/C Compressor Temperature Sensor Malfunction
P1468 SSPOD Open Circuit or Closed Circuit Fault
P1469 Low A/C Cycling Period
P1470 A/C Cycling Period Too Short
P1471 Electrodrive Fan 1 Operational Failure (Driver Side)
P1472 Electrodrive Fan 2 Operational Failure (Passenger Side)
P1473 Fan Secondary High With Fan(s) Off
P1474 Low Fan Control Primary Circuit Malfunction
P1475 Fan Relay (Low) Circuit Malfunction
P1476 Fan Relay (High) Circuit Malfunction
P1477 Additional Fan Relay Circuit Malfunction
P1478 Cooling Fan Driver Fault
P1479 High Fan Control Primary Circuit Malfunction
P1480 Fan Secondary Low with Low Fan On
P1481 Fan Secondary Low With High Fan On
P1482 SCP
P1483 Power To Fan Circuit Overcurrent
P1484 Open Power To Ground VCRM
P1485 EGRV Circuit Malfunction
P1486 EGRA Circuit Malfunction
P1487 EGRCHK Solenoid Circuit Malfunction
P1490 Secondary Air Relief Solenoid Circuit Malfunction
P1491 Secondary Switch Solenoid Circuit Malfunction
P1492 APLSOL Solenoid Circuit Malfunction
P1493 RCNT Solenoid Circuit Malfunction
P1494 SPCUT Solenoid Circuit Malfunction
P1495 TCSPL Solenoid Circuit Malfunction
P1500 Vehicle Speed Sensor Intermittent
P1501 Vehicle Speed Sensor Out Of Self Test Range
P1502 Vehicle Speed Sensor Intermittent Malfunction
P1503 Auxillary Speed Sensor Fault
P1504 Idle Air Control Circuit Malfunction
P1505 Idle Air Control System At Adaptive Clip
P1506 Idle Air Control Overspeed Error
P1507 Idle Air Control Underspeed Error
P1508 Idle Control System Circuit Open
P1509 Idle Control System Circuit Shorted
P1510 Idle Signal Circuit Malfunction
P1511 Idle Switch (Electric Control Throttle) Circuit Malfunction
P1512 Intake Manifold Runner Control (Bank 1) Stuck Closed
P1513 Intake Manifold Runner Control (Bank 2) Stuck Closed
P1514 High Load Neutral/Drive Fault
P1515 Electric Current Circuit Malfunction
P1516 IMRC Input Error (Bank 1)
P1517 IMRC Input Error (Bank 2)
P1518 Intake Manifold Runner Control (Stuck Open)
P1519 Intake Manifold Runner Control (Stuck Closed)
P1520 Intake Manifold Runner Control Circuit Malfunction
P1521 Variable Intake Solenoid #1 Circuit Malfunction
P1522 Variable Intake Solenoid #2 Circuit Malfunction
P1523 IVC Solenoid Circuit Malfunction
P1524 Variable Intake Solenoid System
P1525 Air Bypass Valve System
P1526 Air Bypass System
P1527 Accelerate Warmup Solenoid Circuit Malfunction
P1528 Subsidiary Throttle Valve Solenoid Circuit Malfunction
P1529 SCAIR Solenoid Circuit Malfunction
P1530 A/C Clutch Circuit Malfunction
P1531 Invalid Test - Accelerator Pedal Movement
P1532 IMCC Circuit Malfunction, Bank B
P1533 AAI Circuit Malfunction
P1534 Inertia Switch Activated
P1535 Blower Fan Speed Circuit Range/Performance
P1536 Parking Brake Switch Circuit Failure
P1537 Intake Manifold Runner Control (Bank 1) Stuck Open
P1538 Intake Manifold Runner Control (Bank 2) Stuck Open
P1539 Power To A/C Clutch Circuit Overcurrent
P1540 Air Bypass Valve Circuit Malfunction
P1549 IMCC Circuit Malfunction, Bank B
P1550 PSPS Out Of Self Test Range
P1565 Speed Control Command Switch Out of Range High
P1566 Speed Control Command Switch Out of Range Low
P1567 Speed Control Output Circuit Continuity
P1568 Speed Control Unable to Hold Speed
P1571 Brake Switch Malfunction
P1572 Brake Pedal Switch Circuit Malfunction
P1573 Throttle Position Not Available
P1574 Throttle Position Sensor Disagreement btwn Sensors
P1575 Pedal Position Out of Self Test Range
P1576 Pedal Position Not Available
P1577 Pedal Position Sensor Disagreement btwn Sensors
P1578 ETC Power Less Than Demand
P1579 ETC In Power Limiting Mode
P1580 Electronic Throttle Monitor PCM Override
P1581 Electronic Throttle Monitor Malfunction

P CODE SUMMARY CONTINUED

P1582 Electronic Throttle Monitor Data Available
P1583 Electronic Throttle Monitor Cruise Disable
P1584 TCU Detected IPE Circuit Malfunction
P1585 Throttle Control Unit Malfunction
P1586 Throttle Control Unit Throttle Position Malfunction
P1587 Throttle Control Unit Modulated Command Malfunction
P1588 Throttle Control Unit Detected Loss of Return Spring
P1589 TCU Unable To Control Desired Throttle Angle
P1600 Loss of KAM Power; Open Circuit
P1601 ECM/TCM Serial Communication Error
P1602 Immobilizer/ECM Communication Error
P1603 EEPROM Malfunction
P1604 Code Word Unregestered
P1605 Keep Alive Memory Test Failure
P1606 ECM Control Relay O/P Circuit Malfunction
P1607 MIL O/P Circuit Malfunction
P1608 Internal ECM Malfunction
P1609 Diagnostic Lamp Driver Fault
P1610 SBDS Interactive Codes
P1611 SBDS Interactive Codes
P1612 SBDS Interactive Codes
P1613 SBDS Interactive Codes
P1614 SBDS Interactive Codes
P1615 SBDS Interactive Codes
P1616 SBDS Interactive Codes
P1617 SBDS Interactive Codes
P1618 SBDS Interactive Codes
P1619 SBDS Interactive Codes
P1620 SBDS Interactive Codes
P1621 Immobilizer Code Words Do Not Match
P1622 Immobilizer ID Does Not Match
P1623 Immobilizer Code Word/ID Number Write Failure
P1624 Anti Theft System
P1625 B+ Supply To VCRM Fan Circuit Malfunction
P1626 B+ Supply To VCRM A/C Circuit Malfunction
P1627 Module Supply Voltage Out Of Range
P1628 Module Ignition Supply Input Malfunction
P1629 Internal Voltage Regulator Malfunction
P1630 Internal Vref Malfunction
P1631 Main Relay Malfunction (Power Hold)
P1632 Smart Alternator Faults Sensor/Circuit Malfunction
P1633 KAM Voltage Too Low
P1634 Data Output Link Circuit Failure
P1635 Tire / Axle Ratio Out of Acceptable Range
P1636 Inductive Signature Chip Communication Error
P1637 Can Link ECM/ABSCM Circuit / Network Malfunction
P1638 Can Link ECM/INSTM Circuit / Network Malfunction
P1639 Vehicle ID Block Corrupted or Not Programmed
P1640 Powertrain DTCs Available in Another Module
P1641 Fuel Pump Primary Circuit Failure
P1642 Fuel Pump Monitor Circuit High Input
P1643 Fuel Pump Monitor Circuit Low Input
P1644 Fuel Pump Speed Control Circuit Malfunction
P1645 Fuel Pump Resistor Switch Circuit Malfunction
P1650 PSP Switch Out of Self Test Range
P1651 PSP Switch Input Malfunction
P1652 IAC Monitor Disabled by PSP Switch Failed On
P1653 Power Steering Output Circuit Malfunction
P1654 Recirculation Override Circuit Malfunction
P1655 Starter Disable Circuit Malfunction
P1660 Output Circuit Check Signal High
P1661 Output Circuit Check Signal Low
P1662 IDM_EN Circuit Failure
P1663 Fuel Demand Command Signal Circuit Malfunction
P1667 CI Circuit Malfunction
P1668 PCM - IDM Communications Error
P1670 Electronic Feedback Signal Not Detected
P1680 Metering Oil Pump Malfunction
P1681 Metering Oil Pump Malfunction
P1682 Metering Oil Pump Malfunction
P1683 Metering Oil Pump Temperature Sensor Circuit Malfunction
P1684 Metering Oil Pump Position Sensor Circuit Malfunction
P1685 Metering Oil Pump Stepping Motor Circuit Malfunction
P1686 Metering Oil Pump Stepping Motor Circuit Malfunction
P1687 Metering Oil Pump Stepping Motor Circuit Malfunction
P1688 Metering Oil Pump Stepping Motor Circuit Malfunction
P1689 Oil Pressure Control Solenoid Circuit Malfunction
P1690 Wastegate Solenoid Circuit Malfunction
P1691 Turbo Pressure Control Solenoid Circuit Malfunction
P1692 Turbo Control Solenoid Circuit Malfunction
P1693 Turbo Charge Control Circuit Malfunction
P1694 Turbo Charge Relief Circuit Malfunction
P1700 Transmission Indeterminate Failure (Failed to Neutral)
P1701 Reverse Engagement Error
P1702 TRS Circuit Intermittent Malfunction
P1703 Brake Switch Out Of Self Test Range
P1704 Digital TRS Failed to Transition States in KOEO / KOER
P1705 Not in P or N During KOEO / KOER
P1706 High Vehicle Speed Observed in Park
P1707 Transfer Case Neutral Indicator Hard Fault Present
P1708 Clutch Switch Circuit Malfunction
P1709 PNP Switch Out Of Self Test Range
P1711 TFT Sensor Out Of Self Test Range
P1712 Trans Torque Reduction Request Signal Malfunction
P1713 TFT Sensor In Range Failure Low Value
P1714 SSA Inductive Signature Malfunction
P1715 SSB Inductive Signature Malfunction
P1716 SSC Inductive Signature Malfunction
P1717 SSD Inductive Signature Malfunction
P1718 TFT Sensor In Range Failure High
P1720 Vehicle Speed (Meter) Circuit Malfunction
P1721 Gear 1 Incorrect Ratio
P1722 Gear 2 Incorrect Ratio
P1723 Gear 3 incorrect Ratio
P1724 Gear 4 Incorrect Ratio
P1725 Insufficient Engine Speed Increase During Self Test
P1726 Insufficient Engine Speed Decrease During Self Test
P1727 Coast Clutch Solenoid Inductive Signature Malfunction
P1728 Transmission Slip Error
P1729 4x4 Low Switch Error
P1730 Gear Control Malfunction 2,3,5
P1731 1-2 Shift Malfunction
P1732 2-3 Shift Malfunction
P1733 3-4 Shift Malfunction
P1734 Gear Control Malfunction
P1735 First Gear Switch Circuit Malfunction
P1736 Second Gear Switch Circuit Malfunction
P1737 Lockup Solenoid System
P1738 Shift Time Error
P1739 Slip Solenoid System
P1740 Torque Converter Clutch Inductive Signature Malfunction
P1741 Torque Converter Clutch Control Error
P1742 Torque Converter Clutch Solenoid Failed On
P1743 Torque Converter Clutch Solenoid Failied On
P1744 Torque Converter Clutch System Performance
P1745 Line Pressure Solenoid System
P1746 Pressure Control Solenoid "A" Open Circuit
P1747 Pressure Control Solenoid "A" Short Circuit
P1748 EPC Malfunction
P1749 Pressure Control Solenoid Failed Low
P1751 Shift Solenoid A Performance
P1754 Coast Clutch Solenoid Circuit Malfunction
P1755 Intermediate Speed Sensor (ISS) Malfunction
P1756 Shift Solenoid B Performance
P1760 Pressure Control Solenoid "A" Short Circuit
P1761 Shift Solenoid C Performance
P1762 Overdrive Band Failed Off
P1765 Timing Solenoid Circuit Malfunction
P1767 Torque Converter Clutch Circuit Malfunction
P1768 Performance / Normal / Winter Mode Input Malfunction
P1769 AG4 Transmission Torque Modulation Fault
P1770 Clutch Solenoid Circuit Malfunction
P1775 Transmission System MIL Fault
P1776 Ignition Retard Request Duration Fault
P1777 Ignition Retard Request Circuit Fault
P1778 Transmission Reverse I/P Circuit Malfunction
P1779 TCIL Circuit Malfunction
P1780 Trans Control Switch (O/D Cancel) Out of Self Test Range
P1781 4X4 Switch Out of Self Test Range
P1782 P/ES Circuit Out Of Self Test Range
P1783 Transmission Overtemperature Condition
P1784 Transmission Mechanical Failure - First And Reverse
P1785 Transmission Mechanical Failure - First And Second
P1786 3-2 Downshift Error
P1787 2-1 Downshift Error
P1788 Pressure Control Solenoid "B" Open Circuit
P1789 Pressure Control Solenoid "B" Short Circuit
P1790 TP (Mechanical) Circuit Malfunction
P1791 TP (Electric) Circuit Malfunction
P1792 Barometer Pressure Circuit Malfunction
P1793 Intake Air Volume Circuit Malfunction
P1794 Battery Voltage Circuit Malfunction
P1795 Idle Switch Circuit Malfunction
P1796 Kick Down Switch Circuit Malfunction
P1797 Neutral Switch Circuit Malfunction
P1798 Coolant Temperature Circuit Malfunction
P1799 Hold Switch Circuit Malfunction
P1800 Transmission Clutch Interlock Safety Switch Circuit Failure
P1801 Transmission Clutch Interlock Safety Switch Open Circuit
P1802 Transmission Clutch Interlock Safety Switch Short Circuit To Battery
P1803 Transmission Clutch Interlock Safety Switch Short Circuit To Ground
P1804 Transmission 4-Wheel Drive High Indicator Circuit Failure
P1805 Transmission 4-Wheel Drive High Indicator Open Circuit
P1806 Transmission 4-Wheel Drive High Indicator Short Circuit To Battery
P1807 Transmission 4-Wheel Drive High Indicator Short Circuit To Ground
P1808 Transmission 4-Wheel Drive Low Indicator Circuit Failure
P1809 Transmission 4-Wheel Drive Low Indicator Open Circuit
P1810 Transmission 4-Wheel Drive Low Indicator Short Circuit To Battery
P1811 Transmission 4-Wheel Drive Low Indicator Short Circuit To Ground
P1812 Transmission 4-Wheel Drive Mode Select Circuit Failure
P1813 Transmission 4-Wheel Drive Mode Select Open Circuit
P1814 Transmission 4-Wheel Drive Mode Select Short Circuit To Battery
P1815 Transmission 4-Wheel Drive Mode Select Short Circuit To Ground
P1816 Transmission Neutral Safety Switch Circuit Failure
P1817 Transmission Neutral Safety Switch Open Circuit
P1818 Transmission Neutral Safety Switch Short Circuit To Battery
P1819 Transmission Neutral Safety Switch Short Circuit To Ground
P1820 Transmission Transfer Case Clockwise Shift Relay Coil Circuit Failure
P1821 Transmission Transfer Case Clockwise Shift Relay Coil Open Circuit
P1822 Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery
P1823 Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Ground
P1824 Transmission 4-Wheel Drive Clutch Relay Circuit Failure
P1825 Transmission 4-Wheel Drive Clutch Relay Open Circuit
P1826 Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery
P1827 Transmission 4-Wheel Drive Low Clutch Relay Circuit To Ground
P1828 Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure
P1829 Transmission Transfer Case Counter Clockwise Shift Relay Coil Open Circuit
P1830 Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Battery
P1831 Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground
P1832 Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure
P1833 Transmission Transfer Case Differential Lock-Up Solenoid Open Circuit
P1834 Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Battery
P1835 Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Ground
P1836 Transmission Transfer Case Front Shaft Speed Sensor Circuit Failure
P1837 Transmission Transfer Case Rear Shaft Speed Sensor Circuit Failure
P1838 Transmission Transfer Case Shift Motor Circuit Failure
P1839 Transmission Transfer Case Shift Motor Open Circuit
P1840 Transmission Transfer Case Shift Motor Short Circuit To Battery
P1841 Transmission Transfer Case Shift Motor Short Circuit To Ground
P1842 Transmission Transfer Case Differential Lock-Up Feedback Switch Circuit Failure
P1843 Transmission Transfer Case Differential Lock-Up Feedback Switch Open Circuit
P1844 Transmission Transfer Case Differential Lock-Up Feedback Switch Short Circuit To Battery
P1845 Transmission Transfer Case Differential Lock-Up Feedback Switch Short Circuit To Ground
P1846 Transmission Transfer Case Contact Plate 'A' Circuit Failure
P1847 Transmission Transfer Case Contact Plate 'A' Open Circuit
P1848 Transmission Transfer Case Contact Plate 'A' Short Circuit To Battery
P1849 Transmission Transfer Case Contact Plate 'A' Short Circuit To Ground
P1850 Transmission Transfer Case Contact Plate 'B' Circuit Failure
P1851 Transmission Transfer Case Contact Plate 'B' Open Circuit
P1852 Transmission Transfer Case Contact Plate 'B' Short Circuit To Battery
P1853 Transmission Transfer Case Contact Plate 'B' Short Circuit To Ground
P1854 Transmission Transfer Case Contact Plate 'C' Circuit Failure
P1855 Transmission Transfer Case Contact Plate 'C' Open Circuit
P1856 Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery
P1857 Transmission Transfer Case Contact Plate 'C' Short Circuit To Ground
P1858 Transmission Transfer Case Contact Plate 'D' Circuit Failure
P1859 Transmission Transfer Case Contact Plate 'D' Open Circuit
P1860 Transmission Transfer Case Contact Plate 'D' Short Circuit To Battery
P1861 Transmission Transfer Case Contact Plate 'D' Short Circuit To Ground
P1862 Transmission Transfer Case Contact Plate Power Circuit Failure
P1863 Transmission Transfer Case Contact Plate Power Open Circuit
P1864 Transmission Transfer Case Contact Plate Power Short To Battery
P1865 Transmission Transfer Case Contact Plate Power Short To Ground
P1866 Transmission Transfer Case System Concern - Servicing Required
P1867 Transmission Transfer Case Contact Plate General Circuit Failure
P1868 Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit Failure
P1869 Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit Short To Battery
P1870 Transmission Mechanical Transfer Case 4x4 Switch Circuit Failure
P1871 Transmission Mechanical Transfer Case 4x4 Switch Circuit Short To Battery
P1872 Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Failure
P1873 Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Short To Battery
P1874 Transmission Automatic Hall Effect Sensor Power Circuit Failure
P1875 Transmission Automatic Hall Effect Sensor Power Circuit Short To Battery
P1876 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure
P1877 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short To Battery
P1878 Transmission Transfer Case Disengaged Solenoid Circuit Failure
P1879 Transmission Transfer Case Disengaged Solenoid Open Circuit
P1880 Transmission Transfer Case Disengaged Solenoid Short to Battery
P1881 Engine Coolant Level Switch Circuit Failure, GEM
P1882 Engine Coolant Level Switch Circuit Short to Ground
P1883 Engine Coolant Level Switch Circuit Failure, GEM
P1884 Engine Coolant Level Lamp Circuit Short to Ground
P1885 Transmission Transfer Case Disengaged Solenoid Short to Ground
P1886 4X4 Initialization Failure
P1890 Transmission 4WD Mode Select Return Input Circuit Failure
P1891 Transmission Transfer Case Contact Plate Ground Return Open Circuit
P1900 OSS Circuit Intermittent Malfunction
P1901 TSS Circuit Intermittent Malfunction
P1902 Pressure Control Solenoid "B" Intermittent Short
P1903 Pressure Control Solenoid "C" Short Circuit
P1904 Pressure Control Solenoid "C" Open Circuit
P1905 Pressure Control Solenoid "C" Intermittent Short
P1906 Kickdown Pull Relay Open or Short Circuit to Ground
P1907 Kickdown Hold Relay Open or Short Circuit to Ground
P1908 Transmission Pressure Circuit Solenoid Open or Short to Ground
P1909 Trans. Temp. Sensor Circuit Open or Shorted to Pwr. or Gnd.
P1910 VFS A Pressure Output Failed Low
P1911 VFS B Pressure Output Failed Low
P1912 VFS C Pressure Output Failed Low
P1913 Pressure Switch A Circuit Malfunction
P1914 Manually Shifted Automatic (MSA) Sw. Circuit Malf.
P1915 Reverse Switch Circuit Malfunction
P1916 High Clutch Drum Speed Sensor Malfunction
P1917 High Clutch Drum Speed Sensor Intermittent
P1918 Transmission Range Display Circuit Malfunction
P2004 INTAKE MANIFOLD RUNNER CONTROL STUCK OPEN - BANK 1, MALFUNCTION INDICATOR LAMP (MIL) ON WITH DIAGNOSTIC TROUBLE CODE (DTC)
P2195 (Front HO2S Signal Stuck Lean)
P2196 (Front HO2S Signal Stuck Rich) may be dis-played in reverse.
P2195 may be displayed in case of “stuck rich”
P2196 may be dis-played in case of "stuck lean".