What does code P285D mean?

Q: What does code P285D mean?

Shift Fork A Actuator Circuit Low. P285D indicates that the transmission control module (TCM) has detected an abnormally low voltage or current on the electrical circuit for the Shift Fork A actuator, which is part of an automated manual or dual-clutch transmission's shift mechanism. The TCM monitors the actuator's command and feedback signals and sets this code when the circuit's electrical values fall below the expected range, preventing reliable gear engagement.

DTC codes / P28xx · Transmission / P285D

P285DShift Fork A Actuator Circuit Low

P285D indicates that the transmission control module (TCM) has detected an abnormally low voltage or current on the electrical circuit for the Shift Fork A actuator, which is part of an automated manual or dual-clutch transmission's shift mechanism. The TCM monitors the actuator's command and feedback signals and sets this code when the circuit's electrical values fall below the expected range, preventing reliable gear engagement.

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.