P27DAPressure Control Solenoid T Stuck On
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P27DA marks solenoid T as delivering pressure while it should be vented. Ford lists it in the 2024 overview for the TR9070 for a selector pilot valve whose hydraulic output stays on; neighbouring entries P178C and P178A cover the selector valve and the complete selector mechanism stuck on. Ford gives no detection limits. For comparison, GM detects the same fault on the Corvette selector pilot valve (code P282A, 23OBDG07) during a synchronizer integrity routine: small test movements of the rods show whether the selector sits in the opposite position to the one commanded, and a current-profile check of the pilot valve separates it from the selector spool. A selector locked in one position sends shifts to the wrong rods, so the TCM blocks gears.
- What you may notice
- MIL on
- Gears locked out, wrong gear engagement possible
- Fallback mode
- Likely causes
- LikelySelector pilot valve held open by dirt
- PossibleWorn seat or armature in solenoid T
- RareAbrasion particles from clutch or synchronizer wear
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €300 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.