What does code P28E3 mean?

Q: What does code P28E3 mean?

Shift Motor Phase U-V-W Performance. P28E3 indicates that the transmission control module (TCM) has detected a performance fault in the shift motor's phase U, V, or W electrical circuit, which typically powers a three-phase brushless motor used in some automated manual or dual-clutch transmissions. The TCM monitors current, voltage, or position feedback from the motor phases and sets this code when the expected electrical or mechanical response is not achieved during a shift attempt.

DTC codes / P28xx · Transmission / P28E3

P28E3Shift Motor Phase U-V-W Performance

P28E3 indicates that the transmission control module (TCM) has detected a performance fault in the shift motor's phase U, V, or W electrical circuit, which typically powers a three-phase brushless motor used in some automated manual or dual-clutch transmissions. The TCM monitors current, voltage, or position feedback from the motor phases and sets this code when the expected electrical or mechanical response is not achieved during a shift attempt.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

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.