What does code P2CA1 mean?

Q: What does code P2CA1 mean?

Charge Air Cooler Coolant Pump Sense Circuit High. P2CA1 indicates that the powertrain control module has detected an abnormally high voltage on the sense circuit for the charge air cooler coolant pump, which is the electric pump that circulates coolant through the air-to-liquid intercooler. The computer expects a voltage within a specific range that reflects a valid signal, and a high reading usually means the circuit is open, shorted to voltage, or the pump's internal feedback is missing.

DTC codes / P2Cxx · Hybrid propulsion / P2CA1

P2CA1Charge Air Cooler Coolant Pump Sense Circuit High

P2CA1 indicates that the powertrain control module has detected an abnormally high voltage on the sense circuit for the charge air cooler coolant pump, which is the electric pump that circulates coolant through the air-to-liquid intercooler. The computer expects a voltage within a specific range that reflects a valid signal, and a high reading usually means the circuit is open, shorted to voltage, or the pump's internal feedback is missing.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.