Join Date: Jun 2006
Location: Darwin, MN
What I Drive: 2000 & 2001 ZX3's
FF Reputation: 53
Buy-Sell-Trade Rating: (4
HA40 DTC P1131, P1151, P1132, P1152, P2195, P2196, P2197 AND P2198: UPSTREAM HO2S(S) NOT SWITCHING. DTCs P1130 AND P1150: FUEL SYSTEM NOT SWITCHING AT THE FUEL TRIM (RICH OR LEAN)
HO2S DTCs Reference list
HO2S-11 = DTCs P1131, P1132, P1130, P2195 and P2196
HO2S-21 = DTCs P1151, P1152, P1150, P2197 and P2198
Check intake air system for leaks, obstructions, damage and blockage.
Verify integrity of the PCV system.
Check for disconnected spark plug wires.
Check for vacuum leaks.
Are any of the above concerns present?
REPAIR as necessary. GO to DC25 .
DC25 DTC P0171, P0172, P0174, P0175, P1131, P1132, P1151, P1152, P1130, P1150, P2195, P2196, P2197, P2198 OR LEAN DRIVEABILITY CONCERNS: CHECK CONDITIONS RELATED TO MAF SENSOR
Note: Most weather service reports are a local barometric pressure that has been corrected to sea level. However, the BARO PID reports the actual barometric pressure for the altitude the vehicle is being diagnosed in. Local weather conditions (high or low pressure areas) will change the local barometric pressure by several inches of mercury [+/- 3 Hz. (+/- 1 in.Hg.)].
Note: The BARO PID values in Keep Alive Memory require updating at high throttle openings. If vehicle is driven down from higher altitudes for diagnosing, complete three or four heavy accelerations at greater than half-throttle to allow BARO PID to update. Make BARO PID comparisons to Barometric Pressure Reference Chart or hourly airport barometric pressure or altimeter reports, if available. The BARO PID must be within +/- 6 Hz. (+/- 2 in.Hg.) of the altitude value in Barometric Pressure Reference Chart (at the beginning of this pinpoint test).
Note: A MAF V PID value of less than 0.6 volt may indicate a misassembled air cleaner or a leak in the air inlet system.
Verify the MAF sensor is connected. If not, repair as necessary.
Key on, engine running.
Access the BARO, LONGFT1, LONGFT2 and MAF V PIDs on fully warmed-up engine.
Carry out the following diagnostic checks:
Check that the BARO PID is approximately the same as the barometric pressure reading for the location, day and altitude the vehicle is being diagnosed at.
Check that the MAF V PID at idle and neutral is not greater than 30% of the normal MAF V listed in Section 6 , Reference Values (or not greater than 1.3 volts).
Are the PID values within the expected ranges?
For DTC P0171, P0172, P0174, P0175, P1131, P1132, P1151, P1152, P1130, P1150, P2195, P2196, P2197 or P2198 : Unable to duplicate or identify the fault at this time, GO to Z1 (or GO to HA42 for natural gas vehicles only). For driveability symptoms without DTCs : RETURN to Section 3 , Symptom Charts for further diagnosis. KEY OFF. GO to DC26 .
DC26 CHECK TO ISOLATE MAF SENSOR FROM LEAN DRIVEABILITY OCCURRENCE
Note: Due to increasingly stringent emission/OBD II requirements, a fuel system DTC on some vehicles will be generated without a noticeable driveability concern with or without the MAF sensor disconnected. Under these conditions, if the BARO, LONGFT1, LONGFT2 and MAF V PID indicates a MAF sensor concern, replace the MAF sensor.
Disconnect the MAF sensor.
Key on, engine running.
Drive the vehicle.
Is the lean driveability symptom (lack of power, spark knock/detonation, buck/jerk or hesitation/surge on acceleration) gone?
REPLACE MAF sensor.
RESET the keep alive memory (KAM). REFER to Section 2, Resetting The Keep Alive Memory (KAM) .
VERIFY a symptom no longer exists. For DTC P0171, P0172, P0174, P0175, P1131, P1132, P1151, P1152, P1130, P1150, P2195, P2196, P2197 or P2198 : Unable to duplicate or identify the fault at this time, GO to Z1 (or GO to HA42 for natural gas vehicles only).
For lean driveability symptoms listed without DTCs : RETURN to Section 3 , Symptom Charts for further diagnosis.
Typical Diagnostic Reference Values
Sensors/Inputs PCM Pin/PID only Measured/PID Values Units Measured/PID
KOEO Hot Idle 30 MPH 55 MPH
FEPS 13 .5-.6 .5-.6 .5-.6 .5-.6 DCV
CKP (+) 21 0 400-425 900-1000 1150-1400 Hz
PSP V/PSP 31 .1/LOW VBAT/HIGH (I) .1/LOW .1/LOW DCV/ LOW-HIGH
O2S12 35 .1 (D) (D) (D) DCV
CHT V/CHT 38 .67 or 3.7/194 .67 or 3.7/194 .67 or 3.7/194 .67 or 3.7/194 DCV/DEG
IAT 39 1.7-3.5/120-50 (K) 1.7-3.5/120-50 (K) 1.7-3.5/120-50 (K) 1.7-3.5/120-50 (K) DCV/DEG
FPM 40 3.5/100 3.5/100 3.5/100 3.5/100 DCV/%
ACCS 41 .1/OFF VBAT/ON (A) .1/OFF .1/OFF DCV/OFF-ON
PATSIN 53 (T) (T) (T) (T) (T)
KS 57 0 0 0 0 DCV
OSS 58 0 0 200-220/
430-450 360-827 Hz/RPM
GFS 59 0 130/30 130/27 130/23 Hz/%
O2S11 60 0 switching (C) switching (C) switching (C) DCV
FRPV/FRP 63 3/43 2.8/39 2.8/39 2.8/39 DCV/PSI
FTP V/FTP 62 2.6/0 2.6/0 2.6/0 2.6/0 DCV/IN-H20
CPP/PNP 64 5/OFF .1/ON (J) 5/OFF 5/OFF DCV/OFF-ON
DPFEGR 65 .25-1.30 .25-1.30 .25-4.65 .25-4.65 DCV
CID 85 0 5-7 11-15 16-21 Hz
ACP 86 VBAT/OPEN VBAT/OPEN VBAT/OPEN VBAT/OPEN DCV/OPEN-
MAF V 88 0 .6-.9 1-1.6 1.3-2.3 DCV
TP V 89 .53-1.27 .53-1.27 1-1.3 1.1-1.9 DCV
BPP 92 .1/OFF VBAT/ON (E) .1/OFF .1/OFF DCV/OFF-ON
ECT PID 160-200 160-200 160-200 160-200 DEG
EFTA PID 50-120 (K) 50-120 (K) 50-120 (K) 50-120 (K) DEG
FLI PID 50 50 50 50 %
LOAD PID (L) 10-20 20-31 25-52 %
MISF PID OFF OFF OFF OFF OFF-ON
OCTADJS PID NO RETARD NO RETARD NO RETARD NO RETARD NO RETARD/
RPM PID 0 700-750 1630-1820 2100-2400 RPM
VSS PID 0 0 30 55 MPH
Actuators/ Outputs PCM Pin/PID only Measured/PID Values Units Measured/PID
KOEO Hot Idle 30 MPH 55 MPH
MIL 2 .1/OFF VBAT/OFF VBAT/OFF VBAT/OFF DCV/OFF-ON
HFC 17 VBAT/OFF .1/ON (B) VBAT/OFF VBAT/OFF DCV/OFF-ON
INJ3 20 0 3.3-3.7 4.1-8 4.4-10.1 mS
PATSOUT 19 (T) (T) (T) (T) (T)
CDA 26 VBAT VBAT VBAT VBAT DCV
PATSTRT 27 (T) (T) (T) (T) (T)
VSO 28 0 0 65 125 Hz
PATSIL 42 (T) (T) (T) (T) (T)
EGRVR 47 VBAT/0 VBAT/0 (V) (V) DCV/%
CTO 48 0 25-38 48-59 72-85 Hz
CDB 52 VBAT VBAT VBAT VBAT DCV/%
FP 54 3.7/75 1.3-26 1.5/27 1.5/30 DCV/%
EVAPPDC 56 0 0-10/0-100 0-10/0-100 0-10/0-100 Hz/%
EVAPC V 67 0 0-10/0-100 0-10/0-100 0-10/0-100 DVC/OFF-ON
LFC 68 VBAT/OFF .1/ON (B) VBAT/OFF VBAT/OFF DCV/OFF-ON
WAC 69 VBAT/OFF .1/ON (A) VBAT/OFF VBAT/OFF DCV/OFF-ON
GENFDC 72 0 0 0 0 Hz/%
INJ1 70 0 3.3-3.7 4.1-8 4.4-10.1 mS
MFC 75 VBAT/OFF .1/ON (B) VBAT/OFF VBAT/OFF DCV/OFF-ON
IAC 83 VBAT/0 9-11/20-40 8-11.1/34-50 6-7.5/45-60 DCV/%
HTR11 93 .1/ON (P) .1/ON .1/ON .1/ON DCV/OFF-ON
INJ2 96 0 3.3-3.7 4.1-8 4.4-10.1 mS
INJ4 95 0 3.3-3.7 4.1-8 4.4-10.1 mS
HTR12 100 .2/ON (P) .2/ON .2/ON .2/ON DCV/OFF-ON
CHTIL PID OFF OFF OFF OFF OFF-ON
FUELPW1 PID (L) 3.3-3.7 4.1-8 4.4-10.1 mS
LONGFT1 PID (-)20-(+)20 (-)20-(+)20 (-)20-(+)20 (-)20-(+)20 %
SHRTFT1 PID (L) (-)10-(+)10 (-)10-(+)10 (-)10-(+)10 %
SPARKADV PID 0 15-33 28-35 25-35 DEG
Other PCM Pin/PID only Measured/PID Values Units Measured/PID
KOEO Hot Idle 30 MPH 55 MPH
KAPWR 55 VBAT VBAT VBAT VBAT DCV
VPWR 71 VBAT VBAT VBAT VBAT DCV
VREF 90 5 5 5 5 DCV
No clue what capabilities your scan tool has. But you'll want to view live data. If you can't view live data, you're not going to get anywhere in any reasonable time.
My best guess's,
- O2 heater fuse is blown
- MAFS is in backwards
- FRPS is damaged
The STFT's should switch around a centerpoint of 1. This code means that centerpoint is either lower than 1 and LTFT's can not correct it; LTFT's can correct up to 25%, that is leaning the mix 25% ... which still isn't enough and this code is thrown.
When viewing live data you'll probably see STFT's in the range of 0.825 and stable. This means the car is running forced open loop because of something. LTFT's will probably read 1.25 or near, trying to remove fuel.
I'll bet the MAF_V is going to be all over the place if it's reading at all.
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