What does code P24AC mean?

Q: What does code P24AC mean?

EGR Cooler Coolant Pump Feedback Circuit Low. P24AC indicates that the engine control module has detected a low feedback signal on the circuit for the EGR cooler coolant pump, which is responsible for circulating coolant through the exhaust gas recirculation cooler. The computer expects a certain voltage or current on the feedback wire but sees a value below the acceptable threshold, suggesting an open circuit, short to ground, or faulty pump.

DTC codes / P24xx · Auxiliary emission controls / P24AC

P24ACEGR Cooler Coolant Pump Feedback Circuit Low

P24AC indicates that the engine control module has detected a low feedback signal on the circuit for the EGR cooler coolant pump, which is responsible for circulating coolant through the exhaust gas recirculation cooler. The computer expects a certain voltage or current on the feedback wire but sees a value below the acceptable threshold, suggesting an open circuit, short to ground, or faulty pump.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaAuxiliary emission controls

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