P0C09: The traction B motor phase U V W gives a lower signal than normal
The traction B motor phase U V W gives a lower signal than normal. It is usually the part, its wiring or a connector with poor contact.
| Code | P0C09 |
|---|---|
| System | Engine and transmission |
| Group | P0Cxx, Hybrid and electric |
| Type | Generic: it means the same on every make |
How to read and clear P0C09 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 P0C09 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
- P0C05 The traction A motor phase U V W has a broken or disconnected wire
- P0C06 The traction A motor phase U V W gives a lower signal than normal
- P0C07 The traction A motor phase U V W gives a higher signal than normal
- P0C08 The traction B motor phase U V W has a broken or disconnected wire
- P0C0A The traction B motor phase U V W gives a higher signal than normal
- P0C0B The traction motor inverter power supply A has a broken or disconnected wire
- P0C0C The traction motor inverter power supply A gives a lower signal than normal
- P0C0D The traction motor inverter power supply A gives a higher signal than normal
What does code P0C09 mean?
The traction B motor phase U V W gives a lower signal than normal. It is usually the part, its wiring or a connector with poor contact.
How do you clear P0C09?
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, P0C09 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.
