What does code P24C0 mean?

Q: What does code P24C0 mean?

EVAP System Leak Detection Pump Switching Valve Stuck On. P24C0 indicates that the powertrain control module (PCM) has detected the evaporative emission (EVAP) system leak detection pump switching valve is stuck in the on position, meaning the valve remains energized or mechanically open when it should be closed. The PCM commands the valve to switch states and monitors the circuit or pressure response, finding that the valve does not change state as expected, which can prevent the EVAP system from performing its leak detection routine.

DTC codes / P24xx · Auxiliary emission controls / P24C0

P24C0EVAP System Leak Detection Pump Switching Valve Stuck On

P24C0 indicates that the powertrain control module (PCM) has detected the evaporative emission (EVAP) system leak detection pump switching valve is stuck in the on position, meaning the valve remains energized or mechanically open when it should be closed. The PCM commands the valve to switch states and monitors the circuit or pressure response, finding that the valve does not change state as expected, which can prevent the EVAP system from performing its leak detection routine.

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.