Powertrain, generic · Transmission

P0750 Shift Solenoid A

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

Open or corroded wire or transmission pass-through connector
Solenoid coil open or shorted
Internal harness or electronic module in the transmission
Module driver faulty or valve supply missing

Symptoms

  • Check engine or transmission warning lamp
  • Limp mode in a fixed gear, no upshifts
  • Harsh shifts from maximum line pressure

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–600
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

What to check first

  1. Check fluid condition
  2. Measure solenoid resistance
  3. Inspect connector at the transmission

Parts involved

shift solenoidtransmission valve bodytransmission wiringtransmission control module

Related codes

P0753P0973P0974P0751P0755P0657

References: newtonnet.co.uk, fordservicecontent.com, static.nhtsa.gov, law.cornell.edu.