Possible causes

– Low transmission fluid level
– Dirty transmission fluid
– Faulty shift solenoid valve
– Shift solenoid valve harness or connectors
– Shift solenoid valve circuit is open or shorted

When is the code detected?

ECM has detected an open or shorted condition on the relay circuit

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Transmission will not shift gears

P0753 JEEP Description

Shift solenoid valve is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position.