P0750Shift Solenoid A
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- 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). P0750 is the general code for solenoid A and is used in practice for an open circuit: Ford's step automatics (2012–2023) set it when the smart driver feedback disagrees with the command for 0.5–5 s, with shorts to ground and power as P0973/P0974; Ram's 6.7 L with Aisin transmission calls it 'control circuit open', and a 2023 bulletin traces it to a leaking capacitor in the engine module. GM does not use P0750. With the solenoid unpowered the transmission falls back to a hydraulic default gear with maximum pressure.
- What you may notice
- Check engine or transmission warning lamp
- Limp mode in a fixed gear, no upshifts
- Harsh shifts from maximum line pressure
- Likely causes
- LikelyOpen or corroded wire or transmission pass-through connector
- PossibleSolenoid coil open or shorted
- PossibleInternal harness or electronic module in the transmission
- RareModule driver faulty or valve supply missing
- 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: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.