What does code P24D1 mean?

Q: What does code P24D1 mean?

Particulate Matter Sensor Regeneration Incomplete. P24D1 indicates that the particulate matter (PM) sensor's regeneration cycle did not complete within the time or conditions expected by the engine control module (ECM). The ECM monitors the sensor's ability to burn off accumulated soot; when the regeneration fails to finish, it stores this code and illuminates the check engine light.

DTC codes / P24xx · Auxiliary emission controls / P24D1

P24D1Particulate Matter Sensor Regeneration Incomplete

P24D1 indicates that the particulate matter (PM) sensor's regeneration cycle did not complete within the time or conditions expected by the engine control module (ECM). The ECM monitors the sensor's ability to burn off accumulated soot; when the regeneration fails to finish, it stores this code and illuminates the check engine light.

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.