P034C: The ion detection system gives readings outside the normal range
The ion detection system gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
| Code | P034C |
|---|---|
| System | Engine and transmission |
| Group | P03xx, Ignition and misfires |
| Type | Generic: it means the same on every make |
How to read and clear P034C 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 P034C 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
- P0346 Camshaft position sensor A signal out of range (bank 2)
- P0347 The camshaft position sensor A (bank 2) gives a lower signal than normal
- P0348 The camshaft position sensor A (bank 2) gives a higher signal than normal
- P0349 The camshaft position sensor A (bank 2) fails now and then
- P0350 The primary or secondary circuit of the ignition coil has a fault
- P0351 Ignition coil A circuit fault
- P0352 Ignition coil B circuit fault
- P0353 Ignition coil C circuit fault
- 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 P034C mean?
The ion detection system gives readings outside the normal range. It is usually the part, its wiring or a connector with poor contact.
How do you clear P034C?
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, P034C 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.
