P0945: The hydraulic pump relay circuit has a broken or disconnected wire
The hydraulic pump relay circuit has a broken or disconnected wire. It is usually a broken wire, a loose connector or the part itself.
| Code | P0945 |
|---|---|
| System | Engine and transmission |
| Group | P09xx, Transmission |
| Type | Generic: it means the same on every make |
How to read and clear P0945 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 P0945 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
- P0941 The hydraulic oil temperature sensor circuit has an intermittent fault
- P0942 The hydraulic pressure unit is not working properly
- P0943 The hydraulic pressure unit cycles too quickly
- P0944 The hydraulic pressure unit is losing pressure
- P0946 The hydraulic pump relay gives readings outside the normal range
- P0947 The hydraulic pump relay gives a lower signal than normal
- P0948 The hydraulic pump relay gives a higher signal than normal
- P0949 The automated manual gearbox has not completed its adaptive learning
What does code P0945 mean?
The hydraulic pump relay circuit has a broken or disconnected wire. It is usually a broken wire, a loose connector or the part itself.
How do you clear P0945?
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, P0945 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.
