What does code P24DC mean?

Q: What does code P24DC mean?

Reductant Purge Control Valve B Performance. P24DC indicates that the powertrain control module has detected a performance fault in the reductant purge control valve B circuit, which is part of the diesel exhaust fluid system on vehicles equipped with selective catalytic reduction. The computer monitors the valve's electrical response and expected pressure or flow changes during commanded purge events, and it sets this code when the observed behavior falls outside the calibrated range.

DTC codes / P24xx · Auxiliary emission controls / P24DC

P24DCReductant Purge Control Valve B Performance

P24DC indicates that the powertrain control module has detected a performance fault in the reductant purge control valve B circuit, which is part of the diesel exhaust fluid system on vehicles equipped with selective catalytic reduction. The computer monitors the valve's electrical response and expected pressure or flow changes during commanded purge events, and it sets this code when the observed behavior falls outside the calibrated range.

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.