P2771: The four wheel drive low range switch has an electrical fault
The four wheel drive low range switch has an electrical fault. It may be the part itself, its connector or the wiring.
| Code | P2771 |
|---|---|
| System | Engine and transmission |
| Group | P27xx, Transmission |
| Type | Generic: it means the same on every make |
How to read and clear P2771 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 P2771 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
- P2767 There is no signal from gearbox input shaft speed sensor B
- P2768 The gearbox input shaft speed sensor B circuit fails intermittently
- P2769 The torque converter clutch gives a lower signal than normal
- P2770 The torque converter clutch gives a higher signal than normal
- P2772 The four wheel drive low range switch gives readings outside the normal range
- P2773 The four wheel drive low range switch gives a lower signal than normal
- P2774 The four wheel drive low range switch gives a higher signal than normal
- P2775 The gear shift switch gives readings outside the normal range
What does code P2771 mean?
The four wheel drive low range switch has an electrical fault. It may be the part itself, its connector or the wiring.
How do you clear P2771?
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, P2771 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.
