Powertrain
generic / SAE
P011C
Charge Air Cooler Temperature/Intake Air Temperature Correlation Bank 1
CAC temperature and IAT on bank 1 disagree at long soak. The intake air temperature sensor feeds the ECM's density calculation — a drifted reading miscalculates fuel mass and pushes mixture lean (cold reading) or rich (hot reading).
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / 1C
Possible causes
- One sensor drifted high
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–350 €
- Estimated time: 0.5–2 h
- Component: cac temperature sensor
- Component: iat sensor
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012