Powertrain
generic / SAE
P0386
Crankshaft Position Sensor B Circuit Range/Performance
Crank sensor B reads in range but plausibility check fails. The crankshaft position sensor provides RPM and crank angle — without a valid signal, no ignition and no injection. Engine will not start or stalls instantly.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 86
Possible causes
- Sensor drift high
- Sensor element aged beyond calibration window low
- Sensor mounting loose - signal damping low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–2.5 h
- Component: crankshaft position sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012