What does code P28CB mean?

Q: What does code P28CB mean?

Clutch A Motor Position Sensor Circuit/Open. P28CB indicates that the transmission control module (TCM) or clutch control module has detected an open circuit or faulty signal from the Clutch A Motor Position Sensor, which monitors the position of the clutch actuator motor in automated manual or dual-clutch transmissions. The computer sets this code when the sensor's voltage or signal is outside the expected range, often due to a wiring break, poor connection, or sensor failure.

DTC codes / P28xx · Transmission / P28CB

P28CBClutch A Motor Position Sensor Circuit/Open

P28CB indicates that the transmission control module (TCM) or clutch control module has detected an open circuit or faulty signal from the Clutch A Motor Position Sensor, which monitors the position of the clutch actuator motor in automated manual or dual-clutch transmissions. The computer sets this code when the sensor's voltage or signal is outside the expected range, often due to a wiring break, poor connection, or sensor failure.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaTransmission

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.