Powertrain
generic / SAE
P2AEB
Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 2
The trim adjustment for the pumping current of the intake air oxygen sensor on bank 2 reports a circuit high condition. Wide-band lambda regulation on the intake side is impaired.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberA / EB
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
- Estimated cost: 150–800 €
- Estimated time: 0.5–3 h
- Component: intake air o2 sensor b2
- Component: wiring harness
- Component: ecm
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012