What P0765 means
A shift solenoid is an electrically switched valve in the valve body.
How the engine computer detects it
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). P0765 is the general code for solenoid D and, at Ford, means an open circuit (0.5–5 s); shorts are P0982/P0983. On Ford's 6R80 and 6F transmissions solenoid D feeds either the low/reverse brake or the 4-5-6 clutch via a multiplex valve, on the 6R140 only the low/reverse brake; on the 2023 diesel its supply is shared with solenoid B and the converter clutch (P2669). A Ram 6.7 L bulletin traces P0765 to a leaking capacitor in the engine module.
Written from public technical sources and not yet checked by a mechanic. How we write these pages
Symptoms
- Check engine or transmission warning lamp
- Limp mode in a fixed gear (Ford: fifth with maximum pressure)
- No reverse or engine braking in first, or missing 4th–6th gears (Ford)
Common causes
- Open or corroded wire, connector or internal harness Most likely
- Solenoid coil open or shorted Possible
- Solenoid supply (high-side switch) missing Less likely
- Module driver faulty Less likely
How to diagnose P0765
- Read every stored code with an OBD-II scanner. If misfire or fuel trim codes are there too, fix those first: they often cause this one.
- Inspect the parts involved: shift solenoid, transmission valve body, transmission wiring, transmission control module.
- Work through the causes above from most to least likely, cheapest checks first.
- Clear the code and drive a full drive cycle to confirm the repair held.
Reading the code
- P
- Powertrain
- 0
- Generic (SAE) code
- 7
- Transmission
- 65
- Specific fault
Questions drivers ask
Can I drive with code P0765?
If the car shifts normally, drive gently to a shop. If it's stuck in one gear, slips, shifts harshly or won't move out of Park, don't drive it: have it towed.
Will my car pass an emissions inspection with P0765?
Probably not in states that test vehicles with an OBD-II scan: an emissions-related code that keeps the check engine light on is usually an automatic fail. Rules differ by state and county, so check yours.
Often reported together
Codes that owners mention in the same NHTSA complaints as P0765. They can point to a shared cause, so it's worth checking them together.
This page is general information, not a substitute for a professional diagnosis. Repair costs are rough estimates for parts and labor and vary by vehicle and region.