OBD-II code · Powertrain (generic, extended)
P2ACB Charge Air Cooler Coolant Temperature Sensor B Circuit Intermittent/Erratic
The charge air cooler coolant temperature B sensor signal drops out or jumps intermittently. Loose connector or noisy ground.
Is it safe to drive with P2ACB?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor connector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Charge Air Cooler Coolant Temp Sensor B, Wiring Harness, Ecm
Related codes
- P2AC8Charge Air Cooler Coolant Temperature Sensor B Range/Performance
- P2AC9Charge Air Cooler Coolant Temperature Sensor B Circuit Low
- P2ACACharge Air Cooler Coolant Temperature Sensor B Circuit High
- P2ACCReductant Temperature Sensor B Circuit
- P2ACDReductant Temperature Sensor B Range/Performance
- P2ACEReductant Temperature Sensor B Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.