P27DFPressure Control Solenoid T Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P27DF points to a control line of solenoid T pulled too low. In Ford's 2024 OBD summary it is the shorted-switch fault of the selector pilot valve on the TR9070 dual-clutch gearbox, meaning the switched side of the coil is tied to ground and the valve can be powered permanently. Ford publishes no thresholds. GM's equivalent test on the Corvette selector pilot valve (P282F in 23OBDG07) flags a sense voltage below roughly 1.7 V for 100 ms while the output is on. A permanently applied pilot valve holds the selector in its working position, so the shift valves keep acting on the same rods and the controller has to fence off gears. Inspect for insulation damage and a coil shorted to ground.
- What you may notice
- MIL on
- Gears fenced off, shifts limited to some gears
- Limp mode
- Likely causes
- LikelyDamaged insulation letting the wire touch ground
- PossibleSolenoid T coil shorted to ground
- RareTCM output switch stuck conducting
- 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: €100 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.