Powertrain
generic / SAE
P2AE2
Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 1
The trim adjustment for the pumping current of the intake air oxygen sensor on bank 1 reports a circuit high condition. Wide-band lambda regulation on the intake side is impaired.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberA / E2
Possible causes
- Pump current wire shorted to B+ high
- Open pump cell medium
- Connector pins corroded - high contact resistance low
Symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
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References
sae:J2012