Powertrain
generic or reserved
P34B8
B Camshaft Position Actuator Temperature Sensor Circuit Bank 2
Generic electrical fault on the temperature sensor of the exhaust camshaft position 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 / B8
Possible causes
- Temperature 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 temp sensor b2
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012