P271B: Gearbox park lock position sensor A gives a higher signal than normal
Gearbox park lock position sensor A gives a higher signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
| Code | P271B |
|---|---|
| System | Engine and transmission |
| Group | P27xx, Transmission |
| Type | Generic: it means the same on every make |
How to read and clear P271B 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 P271B 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
- P2717 The pressure control solenoid D fails now and then
- P2718 The pressure control solenoid D control has a broken or disconnected wire
- P2719 The pressure control solenoid D control gives readings outside the normal range
- P271A Gearbox park lock position sensor A gives a lower signal than normal
- P271C Gearbox park lock position sensor B gives a lower signal than normal
- P271D Gearbox park lock position sensor B gives a higher signal than normal
- P271F The electronic gearbox lever needs its learning procedure
- P2720 The pressure control solenoid D control gives a lower signal than normal
What does code P271B mean?
Gearbox park lock position sensor A gives a higher signal than normal. It is usually the sensor itself, its wiring or a real fault in what it measures.
How do you clear P271B?
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, P271B 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.
