P0870: The gearbox oil pressure sensor C has an electrical fault
The gearbox oil pressure sensor C has an electrical fault. It may be the part itself, its connector or the wiring.
| Code | P0870 |
|---|---|
| System | Engine and transmission |
| Group | P08xx, Transmission |
| Type | Generic: it means the same on every make |
How to read and clear P0870 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 P0870 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
- P086C The neutral position sensor A gives a lower signal than normal
- P086D The neutral position sensor A gives a higher signal than normal
- P086E The neutral position sensor A fails now and then
- P086F The neutral position sensor A needs its learning procedure
- P0871 The gearbox oil pressure sensor C gives readings outside the normal range
- P0872 The gearbox oil pressure sensor C gives a lower signal than normal
- P0873 The gearbox oil pressure sensor C gives a higher signal than normal
- P0874 The gearbox oil pressure sensor C fails now and then
- P0841 Transmission fluid pressure sensor/switch A: circuit range or performance
- P0842 Transmission fluid pressure sensor/switch A: circuit low
- P0843 Transmission fluid pressure sensor/switch A: circuit high
- P0868 Transmission fluid pressure low
What does code P0870 mean?
The gearbox oil pressure sensor C has an electrical fault. It may be the part itself, its connector or the wiring.
How do you clear P0870?
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, P0870 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.
