P0709: The gearbox position sensor fails now and then
The gearbox position sensor fails now and then. It is usually the part, its wiring or a connector with poor contact.
| Code | P0709 |
|---|---|
| System | Engine and transmission |
| Group | P07xx, Transmission |
| Type | Generic: it means the same on every make |
How to read and clear P0709 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 P0709 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
- P0705 Transmission range sensor: circuit fault
- P0706 Transmission range sensor: range/performance
- P0707 The gearbox position sensor gives a lower signal than normal
- P0708 The gearbox position sensor gives a higher signal than normal
- P070A The gearbox oil level sensor has an electrical fault
- P070B The gearbox oil level sensor gives readings outside the normal range
- P070C The gearbox oil level sensor gives a lower signal than normal
- P070D The gearbox oil level sensor gives a higher signal than normal
- P0700 Transmission control system: fault detected
- P0701 Transmission control system: range/performance
- P0702 Transmission control system: electrical fault
- P0703 Torque converter/brake switch B: circuit fault
What does code P0709 mean?
The gearbox position sensor fails now and then. It is usually the part, its wiring or a connector with poor contact.
How do you clear P0709?
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, P0709 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.
