P0749Pressure Control Solenoid A 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
- Pressure control solenoid A sets line or clutch pressure by current; most are 'normally high', so with no current – as in limp mode – maximum pressure applies. 'A' is usually the line pressure valve, on GM clutch-to-clutch transmissions (6T, 8L, 9T) the pressure valve of clutch 1. Ford does not use P0745–P0749 but P0960–P0963. P0749 is an intermittent fault in the circuit of this valve. No manufacturer document available to us uses it; Mitsubishi defines the sister code for valve B (P0779) as circuit open or shorted to positive for 1 s. Brief current or voltage dropouts make the module switch the valve off – maximum pressure – and retest it, so harsh shifts or limp mode appear at times and vanish after a restart.
- What you may notice
- Harsh shifts at times
- Occasional limp mode, normal again after restart
- Warning lamp (sometimes only stored)
- Likely causes
- LikelyLoose contact or corrosion at the transmission connector
- PossibleChafed harness (intermittent short)
- PossibleValve with temperature-dependent winding fault
- RareVoltage dips or poor ground
- 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 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.