What does code P24DE mean?

Q: What does code P24DE mean?

Reductant Purge Control Valve B Circuit High. P24DE indicates that the powertrain control module has detected an abnormally high voltage on the control circuit for the reductant purge control valve, which is part of the diesel exhaust fluid injection system. The computer expects the circuit to pull to a specific voltage when commanded, and a reading above the acceptable threshold tells it the circuit is open, shorted to voltage, or the valve is not responding as designed.

DTC codes / P24xx · Auxiliary emission controls / P24DE

P24DEReductant Purge Control Valve B Circuit High

P24DE indicates that the powertrain control module has detected an abnormally high voltage on the control circuit for the reductant purge control valve, which is part of the diesel exhaust fluid injection system. The computer expects the circuit to pull to a specific voltage when commanded, and a reading above the acceptable threshold tells it the circuit is open, shorted to voltage, or the valve is not responding as designed.

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.