Symptoms

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

Possible Causes

- Low transmission fluid level - Dirty transmission fluid - Faulty solenoid valve - Solenoid valve harness or connectors - Solenoid valve circuit is open or shorted

When Detected

The P0752 code is detected when the TCM has detected voltage on the 1-2/4-5 shift solenoid during a period when the solenoid is not active

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.