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DTC codes / P24xx · Auxiliary emission controls / P24FC

P24FCParticulate Matter Sensor Heater Control Circuit Driver Current/Temperature Too High

P24FC indicates that the powertrain control module (PCM) has detected an excessively high current or temperature in the heater control circuit for the particulate matter (PM) sensor. The PCM monitors the heater driver to ensure it operates within safe limits, and this code sets when the driver current or temperature exceeds a calibrated threshold, typically due to a short to ground or a failing heater element.

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.

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