OBD-II code · Powertrain (generic, extended)
P2ACA Charge Air Cooler Coolant Temperature Sensor B Circuit High
Voltage on the charge air cooler coolant temperature B sensor signal line is above the expected window. Wire shorted to B+ or sensor open.
Is it safe to drive with P2ACA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal wire shorted to B+
- PossibleOpen sensor
- Less likelyConnector pins corroded - high contact resistance
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
- P00E1Charge Air Cooler Coolant Temperature Sensor A Circuit High
- P2AC7Charge Air Cooler Coolant Temperature Sensor B Circuit
- P2AC8Charge Air Cooler Coolant Temperature Sensor B Range/Performance
- P2AC9Charge Air Cooler Coolant Temperature Sensor B Circuit Low
- P2ACBCharge Air Cooler Coolant Temperature Sensor B Circuit Intermittent/Erratic
- P2ACCReductant Temperature Sensor B Circuit
- P2ACDReductant Temperature Sensor B Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.