Powertrain
generic or reserved
P34A4
A Camshaft Position Actuator Temperature Sensor Circuit Bank 1
Generic electrical fault on the temperature sensor of the intake camshaft position actuator on bank 1 (used by ECU to thermally protect the VVT actuator from overheating).
SystemPowertrain
Typegeneric or reserved
GroupP3
Range / number4 / A4
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 a temp sensor b1
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012