Powertrain
generic / SAE
P034A
Crankshaft Position Sensor - Crankshaft Start Position Incorrect
At engine start the crankshaft position reported by the sensor does not match the calibrated start window — typically a wrong tone-wheel installation, sensor air gap, or PCM not synchronised after a relearn.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 4A
Possible causes
- Tone wheel misindexed or relearn pending high
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–4 h
- Component: crankshaft position sensor
- Component: flywheel
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012