P0977: The gearbox solenoid B control gives a higher signal than normal
The gearbox solenoid B control gives a higher signal than normal. It is usually the part, its wiring or a connector with poor contact.
| Code | P0977 |
|---|---|
| System | Engine and transmission |
| Group | P09xx, Transmission |
| Type | Generic: it means the same on every make |
How to read and clear P0977 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 P0977 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
- P0973 The gearbox solenoid A control gives a lower signal than normal
- P0974 The gearbox solenoid A control gives a higher signal than normal
- P0975 The gearbox solenoid B control gives readings outside the normal range
- P0976 The gearbox solenoid B control gives a lower signal than normal
- P0978 The gearbox solenoid C control gives readings outside the normal range
- P0979 The gearbox solenoid C control gives a lower signal than normal
- P097A The gearbox solenoid A control has a broken or disconnected wire
- P097B The gearbox solenoid B control has a broken or disconnected wire
What does code P0977 mean?
The gearbox solenoid B control gives a higher signal than normal. It is usually the part, its wiring or a connector with poor contact.
How do you clear P0977?
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, P0977 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.
