P34C7B Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High 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
- P34C7 closes the group of four driver-load codes: on bank 2 the power stage of the exhaust-side actuator B reports current or temperature above its limit. NTN-SNR ties it to outlet adjustment on the second bank. It is the rarest of the set, because electric phasers have so far appeared on the intake side; no public manufacturer document names P34C7. The fault type means the module is guarding itself, not that a sensor reads wrong, since position and temperature sensor faults of this actuator have their own codes (P34C0 to P34C3, P34B8). Plausible triggers are a motor working against a seized or poorly oiled phaser, a short in its wiring, or a driver that runs hot because it sits close to the exhaust side. CARB treats such phasers as monitored outputs. Driving continues, just with exhaust timing locked. Bank 1: P34C6.
- What you may notice
- Check engine light on
- Bank 2 exhaust timing no longer varied
- Usually only small changes in how the engine runs
- Likely causes
- PossibleBank 2 exhaust phaser seized or poorly lubricated
- PossibleMotor wiring of actuator B, bank 2, shorted or heat-damaged
- RareDriver overheating from poor cooling or a module fault
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · 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.