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DTC codes / P09xx · Transmission / P0923

P0923Gear Shift Forward Actuator Circuit High

P0923 indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the electrical circuit that controls the forward gear shift actuator, which is typically a solenoid or motor responsible for engaging forward gears in an automated manual or dual-clutch transmission. The high voltage reading suggests an open circuit, a short to power, or a faulty actuator, preventing the PCM from properly commanding 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.

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