What does code P2CAF mean?

Q: What does code P2CAF mean?

Charge Air Cooler Coolant Pump B Control Circuit High. The powertrain control module (PCM) monitors the control circuit for the charge air cooler (CAC) coolant pump B and has detected a voltage higher than expected on that circuit, indicating an open, short to power, or high-resistance fault. This pump circulates coolant through the air-to-liquid intercooler to keep intake air temperatures down, so a circuit fault can disable the pump and reduce engine performance.

DTC codes / P2Cxx · Hybrid propulsion / P2CAF

P2CAFCharge Air Cooler Coolant Pump B Control Circuit High

The powertrain control module (PCM) monitors the control circuit for the charge air cooler (CAC) coolant pump B and has detected a voltage higher than expected on that circuit, indicating an open, short to power, or high-resistance fault. This pump circulates coolant through the air-to-liquid intercooler to keep intake air temperatures down, so a circuit fault can disable the pump and reduce engine performance.

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.