The P2797 code indicates that the Powertrain Control Module (PCM) has detected that the electric auxiliary transmission fluid pump is not operating when commanded. This pump is typically used to maintain fluid pressure and cooling during specific operating conditions.
The electric pump motor has suffered an internal electrical failure or mechanical seizure.
Corroded connectors, frayed wires, or open circuits between the PCM and the pump.
A loss of power supply to the pump due to a blown fuse or a malfunctioning relay.
The control module is failing to send the trigger signal to activate the pump.
The vehicle is usually drivable, but the lack of auxiliary fluid flow can lead to overheating or increased wear on transmission components over time.
No, P2797 specifically refers to the auxiliary pump, which is a separate electrical component and does not necessarily indicate a total transmission failure.
No. The PCM is the least likely cause of this fault. The pump itself or the electrical circuit should be thoroughly tested before considering a module replacement.