OBD-II code · Powertrain (generic)
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).
Is it safe to drive with P011C?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOne sensor drifted
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cac Temperature Sensor, Iat Sensor
Related codes
- P011DCharge Air Cooler Temperature/Intake Air Temperature Correlation Bank 2
- P0119Engine Coolant Temperature Sensor Circuit Intermittent
- P011AEngine Coolant Temperature Sensor 1/2 Correlation
- P011BEngine Coolant Temperature/Intake Air Temperature Correlation
- P011EEngine Coolant Temperature 1 / Ambient Air Temperature Correlation
- P011FEngine Coolant Temperature 2 / Ambient Air Temperature Correlation
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.