What does code P24B2 mean?

Q: What does code P24B2 mean?

Particulate Matter Sensor Circuit Intermittent. P24B2 indicates that the powertrain control module (PCM) has detected an intermittent fault in the particulate matter (PM) sensor circuit, meaning the signal from the sensor that monitors soot levels in the exhaust is erratic or momentarily lost. The PCM sets this code when the sensor's voltage or communication drops out unpredictably, often due to a loose connection, damaged wiring, or a failing sensor.

DTC codes / P24xx · Auxiliary emission controls / P24B2

P24B2Particulate Matter Sensor Circuit Intermittent

P24B2 indicates that the powertrain control module (PCM) has detected an intermittent fault in the particulate matter (PM) sensor circuit, meaning the signal from the sensor that monitors soot levels in the exhaust is erratic or momentarily lost. The PCM sets this code when the sensor's voltage or communication drops out unpredictably, often due to a loose connection, damaged wiring, or a failing sensor.

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.