Code P0762 indicates that the powertrain control module (PCM) has detected shift solenoid C is stuck in an on or off position, preventing the transmission from engaging the correct gear. This fault typically results from a mechanical or electrical issue with the solenoid itself, contaminated fluid, or wiring problems.
The solenoid may be mechanically stuck due to internal wear, debris, or coil failure, preventing it from moving as commanded.
Contaminated, degraded, or insufficient fluid can cause sludge buildup that restricts solenoid movement or leads to hydraulic pressure issues.
Damaged, corroded, or shorted wiring between the PCM and shift solenoid C can send incorrect signals or no signal at all.
A stuck valve in the valve body, worn clutch packs, or internal hydraulic leaks can mimic a solenoid stuck condition.
Rarely, an internal driver circuit fault in the control module may incorrectly report the solenoid as stuck; this should only be considered after all other causes are ruled out.
It is not recommended. Driving with a stuck shift solenoid can cause the transmission to overheat, slip excessively, or suffer further internal damage, potentially leading to a costly repair.
No. The PCM is very rarely at fault. The most common causes are a failed shift solenoid, dirty transmission fluid, or wiring issues. Always diagnose the solenoid and its circuit thoroughly before suspecting the PCM.
Shift solenoid C is an electro-hydraulic valve inside the transmission that controls the flow of transmission fluid to engage or disengage specific gear sets. It is commanded by the PCM based on vehicle speed, throttle position, and other inputs.
If the code is caused by dirty or low fluid, a fluid and filter change may resolve the issue. However, if the solenoid itself is mechanically stuck or there is an electrical fault, further repair will be necessary.