P34C0B Camshaft Position Actuator Position Sensor A Circuit Bank 2
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P34C0 is the generic circuit fault of position sensor A belonging to camshaft actuator B of bank 2 and therefore appears only on V-type or other two-bank engines. Mercedes-Benz files the bank 2 exhaust feedback of its CAMTRONIC V8 (M176/M177) under neighbouring codes – P34C1 for an implausible signal, P34C2 for a grounded one – but P34C0 itself is absent from its bulletin, and no other carmaker has published it. Diagnosis therefore stays general: supply, ground and signal line between module and actuator, then the actuator with its built-in sensor. If P34BC is set as well, shared feeds and grounds deserve a look before any part is swapped. NTN-SNR describes P34C0 as an electrical fault at the outlet side. The remaining fault types for this sensor are P34C1 to P34C3.
- What you may notice
- Malfunction indicator lamp lit
- Exhaust adjustment on bank 2 disabled
- Likely causes
- LikelyWiring or plug at the bank 2 exhaust actuator open
- PossibleShared sensor feed or ground faulty (if P34BC is also stored)
- PossibleSensor in the bank 2 actuator failed
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €1,300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.