P055FEngine Oil Pressure Out of Range
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- P055F is a condition code: the measured oil pressure is above the maximum expected for speed and oil temperature – Ford, which documents it, calls it 'too high' and pairs it with P0524 (too low). Ford checks continuously for 5 s, only with plausible oil pressure, oil temperature and coolant sensors, as engine protection. Background are regulated oil pumps, whose control valve (P06DA ff) defaults to full pressure on failure. An electrically high signal is P0523 or P055D instead.
- What you may notice
- Check engine light or oil pressure warning
- Possible engine protection or power limit
- Possible oil filter or seal leaks
- Likely causes
- LikelyOil pump control valve or variable pump stuck at high pressure
- PossiblePump relief valve stuck
- PossibleWrong viscosity, very cold oil
- RareSensor A reading high within range
- Repair
- Hard · 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.