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DTC codes / P24xx · Auxiliary emission controls / P24D0

P24D0Particulate Matter Sensor Supply Voltage Circuit Low

P24D0 indicates that the powertrain control module has detected a low voltage condition on the supply circuit feeding the particulate matter sensor, which is used on diesel engines to monitor soot levels in the exhaust. The computer expects a specific voltage range on this circuit and sets the code when the signal falls below the calibrated threshold, pointing to a wiring, connector, or sensor power issue.

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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