P0764Shift Solenoid C Intermittent
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- A shift solenoid is an electrically switched valve in the valve body. Manufacturers use these codes differently: Ford reports an open circuit with the base code and shorts separately, and the letter is not tied to a valve number (Saab's Aisin 9-5: C = valve S4, D = valve S5). P0764 is an intermittent circuit or function fault of solenoid C. No manufacturer document available to us uses this code: Ford watches the circuit continuously under its open and short codes (P0760, P0979, P0980), and GM's 2006 Allison tables count dropouts under P0763 or as an intermittent case of the pressure switch check. Brief dropouts make the module switch the solenoid off and enter limp mode until the next start.
- What you may notice
- Limp mode or jolt at times, then normal again
- Warning lamp comes and goes
- Likely causes
- LikelyLoose contact or corrosion at the transmission connector
- PossibleChafed harness, dependent on temperature or vibration
- RareCoil with heat-dependent winding fault
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.