What does code P2791 mean?

Q: What does code P2791 mean?

Gate Select Direction Circuit Low. P2791 indicates that the transmission control module has detected a low-voltage condition on the gate select direction circuit, which is part of the shift-by-wire system that commands the transmission range actuator. The circuit is responsible for moving the shift gate to the selected direction, and a low signal means the control module cannot reliably command or confirm that movement.

DTC codes / P27xx · Transmission / P2791

P2791Gate Select Direction Circuit Low

P2791 indicates that the transmission control module has detected a low-voltage condition on the gate select direction circuit, which is part of the shift-by-wire system that commands the transmission range actuator. The circuit is responsible for moving the shift gate to the selected direction, and a low signal means the control module cannot reliably command or confirm that movement.

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.