OBD-II code · Powertrain (generic, extended)
P2CAF Charge Air Cooler Coolant Pump B Control Circuit High
Charge air cooler coolant pump B reports a control circuit high condition. CAC coolant loop circulation is impaired.
Is it safe to drive with P2CAF?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyControl wire shorted to B+
- PossibleOpen pump motor
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Cac Coolant Pump B, Wiring Harness, Ecm
Related codes
- P023CCharge Air Cooler Coolant Pump A Control Circuit High
- P2CACDC/DC Converter Temperature Sensor F Circuit Range/Performance
- P2CADCharge Air Cooler Coolant Pump B Control Circuit/Open
- P2CAECharge Air Cooler Coolant Pump B Control Circuit Low
- P2CB0Charge Air Cooler Coolant Pump B Performance
- P2CB1Charge Air Cooler Coolant Pump B Overspeed/Air In System
- P2CB2Charge Air Cooler Coolant Pump B Underspeed
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.