12-01-2012, 01:17 AM
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#6
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Focus Enthusiast
Join Date: Jun 2012
Fan#: 100389
Location: Fairview Park, OH
What I Drive: 2003 Arizona Beige SE 4dr Zetec/ATX
Posts: 181
FF Reputation: 3  Buy-Sell-Trade Rating: ( 2)
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Quote:
Originally Posted by mainest
P2195- Lack of H2OS-11 switch, Sensor indicates lean.
Description: A HUGO 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 colibrated amount of time.
Possible causes:
ELECTRICAL
Short to VPWR in harness or HO2S sensor
Water in harness connector
Open/Shorted HO2S circuit
Corrosion or poor mating terminals and wiring
Damaged HO2S sensor
Damaged PCM
FUEL SYSTEM
Excessive fuel pressure
Leaking fuel injectors
Leaking fuel regulator
Low fuel press or running out of fuel
Vapor recovery system
INDUCTION SYSTEM
Air leaks after MAF
Vacuum leaks
PCV system
Improper seated engine oil dipstick
EGR SYSTEM:
Leaking gasket
Stuck EGR valve
Leaking diaphrame or EVR
BASE ENGINE
Oil overfill
Cam timing
Cylinder compression
Exhaust leaks before or near HO2S sensor
Have you replaced the 02 sensor?
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This.... Thank you!!!
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