P0CF9: The charging switch of the control pilot line gives readings outside the normal
The charging switch of the control pilot line gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
| Code | P0CF9 |
|---|---|
| System | Engine and transmission |
| Group | P0Cxx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0CF9 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 P0CF9 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
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
- P0CF5 The control pilot line to the charging point gives a lower signal than normal
- P0CF6 The control pilot line to the charging point gives a higher signal than normal
- P0CF7 The control pilot line to the charging point fails now and then
- P0CF8 The charging switch of the control pilot line has a broken or disconnected wire
- P0CFA The charging switch of the control pilot line gives a lower signal than normal
- P0CFB The charging switch of the control pilot line gives a higher signal than normal
- P0CFC The charging switch of the control pilot line fails now and then
- P0CFD The charging switch of the control pilot line does not switch on
What does code P0CF9 mean?
The charging switch of the control pilot line gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
How do you clear P0CF9?
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, P0CF9 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.
