P28C8: The clutch A pump motor gives readings outside the normal range
The clutch A pump motor gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
| Code | P28C8 |
|---|---|
| System | Engine and transmission |
| Group | P28xx, Transmission and engine |
| Type | Generic: it means the same on every make |
How to read and clear P28C8 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 P28C8 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
- P28C4 The clutch A motor phase U V W gives a lower signal than normal
- P28C5 The clutch A motor phase U V W gives a higher signal than normal
- P28C6 The clutch A motor phase U V W has a broken or disconnected wire
- P28C7 The clutch A motor phase U V W gives readings outside the normal range
- P28C9 The clutch A motor is turning faster than it should
- P28CA The clutch A motor is turning slower than it should
- P28CB The clutch A motor position sensor has a broken or disconnected wire
- P28CC The clutch A motor position sensor gives readings outside the normal range
What does code P28C8 mean?
The clutch A pump motor gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
How do you clear P28C8?
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, P28C8 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.
