P0759Shift Solenoid B 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, newer GM units have separate low/high codes, and the letter is not tied to a valve number (Saab's 9-5: A = valve S2). P0759 is an intermittent fault of solenoid B: the feedback briefly shows a fault and then recovers. No manufacturer document available to us uses this code: Ford watches its solenoid circuits continuously under the open and short codes, GM counts failures over a window (more than 43 of 50) under P0758. 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.