What does code P24A9 mean?

Q: What does code P24A9 mean?

EGR Cooler Coolant Pump Control Circuit Low. P24A9 indicates that the engine control module (ECM) has detected a low-voltage condition on the control circuit for the exhaust gas recirculation (EGR) cooler coolant pump. This pump circulates coolant through the EGR cooler to manage exhaust temperatures, and a low circuit signal typically points to a wiring fault, poor connection, or a failing pump.

DTC codes / P24xx · Auxiliary emission controls / P24A9

P24A9EGR Cooler Coolant Pump Control Circuit Low

P24A9 indicates that the engine control module (ECM) has detected a low-voltage condition on the control circuit for the exhaust gas recirculation (EGR) cooler coolant pump. This pump circulates coolant through the EGR cooler to manage exhaust temperatures, and a low circuit signal typically points to a wiring fault, poor connection, or a failing 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.