P27F0: The gearbox range control B position sensor gives readings outside the normal
The gearbox range control B position sensor gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P27F0 |
|---|---|
| System | Engine and transmission |
| Group | P27xx, Transmission |
| Type | Generic: it means the same on every make |
How to read and clear P27F0 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P27F0 with its description and whether it’s confirmed, pending or permanent.
This code is usually stored by the gearbox control unit. If the car reports it over standard OBD, you read it for nothing with FREE; to read it straight from the gearbox control unit, with its description and clearing, you need PRO.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P27EC The gearbox range control A position sensor gives readings outside the normal
- P27ED The gearbox range control A position sensor gives a lower signal than normal
- P27EE The gearbox range control A position sensor gives a higher signal than normal
- P27EF The gearbox range control B position sensor has a broken or disconnected wire
- P27F1 The gearbox range control B position sensor gives a lower signal than normal
- P27F2 The gearbox range control B position sensor gives a higher signal than normal
- P27F3 The clutch B temperature is above normal
What does code P27F0 mean?
The gearbox range control B position sensor gives readings outside the normal range. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P27F0?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P27F0 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
