P055F code meaning
Engine Oil Pressure Out of Range
Powertrain system Generic code P05xx codes Check engine light
What P055F means
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.
P055F at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P055F
- Check engine light or oil pressure warning
- Possible engine protection or power limit
- Possible oil filter or seal leaks
Common causes of P055F
- Most likelyOil pump control valve or variable pump stuck at high pressure
- PossiblePump relief valve stuck
- PossibleWrong viscosity, very cold oil
- Less likelySensor A reading high within range
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Oil pumpOil pump control valveOil pressure sensorEngine control module
What each part of P055F means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 5 | Area: vehicle speed, idle control and auxiliary inputs. |
| 5F | The exact fault in that area. |
What to do next
- Note P055F and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P055F
What does P055F mean?
P055F means "Engine Oil Pressure Out of Range". 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). It is a generic code, so it means the same on every make.
Is it safe to drive with P055F?
Drive gently and only to a workshop. With P055F the car can go into limp mode (reduced power) to protect itself.
Will P055F fail an emissions test?
P055F is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P055F to fix?
Difficulty: hard. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P055F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.