P0390: The camshaft position sensor B (bank 2) has an electrical fault
The camshaft position sensor B (bank 2) has an electrical fault. It may be the part itself, its connector or the wiring.
| Code | P0390 |
|---|---|
| System | Engine and transmission |
| Group | P03xx, Ignition and misfires |
| Type | Generic: it means the same on every make |
How to read and clear P0390 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 P0390 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
- P038C The ignition control signal I gives a higher signal than normal
- P038D The ignition control signal J has a broken or disconnected wire
- P038E The ignition control signal J gives a lower signal than normal
- P038F The ignition control signal J gives a higher signal than normal
- P0391 The camshaft position sensor B (bank 2) gives readings outside the normal range
- P0392 Low signal from the second camshaft sensor of the second bank
- P0393 The camshaft position sensor B (bank 2) gives a higher signal than normal
- P0394 The camshaft position sensor B (bank 2) fails now and then
- P0300 Random or multiple cylinder misfire
- P0301 Misfire detected in cylinder 1
- P0302 Misfire detected in cylinder 2
- P0303 Misfire detected in cylinder 3
What does code P0390 mean?
The camshaft position sensor B (bank 2) has an electrical fault. It may be the part itself, its connector or the wiring.
How do you clear P0390?
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, P0390 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.
