Powertrain
generic or reserved
P34C6
B Camshaft Position Actuator Control Circuit Driver Current/Temperature Too High Bank 1
Driver stage controlling the exhaust cam position actuator on bank 1 reports overcurrent or overtemperature. 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 / C6
Possible causes
- Short circuit in actuator wiring or coil 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: 200–2000 €
- Estimated time: 1.5–8 h
- Component: cam actuator b driver b1
- Component: cam actuator b b1
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012