P0945
ŚredniCode P0945 indicates a fault in the hydraulic pump relay circuit (open circuit) in the drivetrain system.
Fault code P0945 indicates a problem with the hydraulic pump relay circuit in the transmission. This can cause shifting problems and illuminate the engine light. The cause could be a faulty relay, an open in the wiring, or a more serious pump fault – professional diagnostics are recommended.
Symptoms
Check Engine light illuminated, problems with gear changes, harsh shifts, difficulty engaging a gear, transmission limp mode, low hydraulic pump performance.
Possible causes
Faulty hydraulic pump relay. Open electrical circuit (damaged wires, loose connectors). Blown fuse. Damaged hydraulic pump. Faults in the transmission control module (TCM).
Affected systems
Does code P0945 require professional diagnostics?
The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.