P2CA1
Charge Air Cooler Coolant Pump Sense Circuit High
The sense feedback circuit for the charge air cooler coolant pump reports a high condition. Pump output verification is impaired.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Sense wire shorted to B+Common
- Pump driver feedback drifted highPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Cac Coolant Pump
- Wiring Harness
- ECM
P2CA1 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.