Powertrain
generic or reserved
P34C0
B Camshaft Position Actuator Position Sensor A Circuit Bank 2
Generic electrical fault on the position sensor of the exhaust cam actuator on bank 2. The camshaft position sensor identifies which cylinder is on the compression stroke — without it the ECM cannot run sequential injection or coil-on-plug ignition correctly.
SystemPowertrain
Typegeneric or reserved
GroupP3
Range / number4 / C0
Possible causes
- Position sensor failed high
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1.5–6 h
- Component: cam actuator b pos sensor b2
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012