What does code P28DA mean?

Q: What does code P28DA mean?

Clutch B Motor Position Sensor Circuit/Open. P28DA indicates that the transmission control module (TCM) or clutch control module has detected an open circuit or abnormal voltage in the position sensor circuit for clutch B, which is typically an electrically actuated clutch in a dual-clutch or automated manual transmission. The computer monitors the sensor signal and sets this code when the voltage falls outside the expected range, indicating a wiring fault, sensor failure, or connector issue.

DTC codes / P28xx · Transmission / P28DA

P28DAClutch B Motor Position Sensor Circuit/Open

P28DA indicates that the transmission control module (TCM) or clutch control module has detected an open circuit or abnormal voltage in the position sensor circuit for clutch B, which is typically an electrically actuated clutch in a dual-clutch or automated manual transmission. The computer monitors the sensor signal and sets this code when the voltage falls outside the expected range, indicating a wiring fault, sensor failure, or connector issue.

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.