Engine and gearbox (P)
P0335: Crankshaft position sensor circuit
The engine control unit is not receiving a proper signal from the crankshaft position sensor. This sensor is crucial for engine timing and operation.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Engine will not start
- Engine stalls
- Poor acceleration
- Check engine light on
Common causes
- Failed crankshaft position sensor
- Heat-damaged wiring
- Faulty reluctor wheel
- Poor electrical connection
How to check it yourself
- Check for any stored fault codes
- Inspect the wiring and connectors for damage
- Test the crankshaft position sensor with a multimeter
- Check the reluctor wheel for damage or misalignment
Can I keep driving?
If the engine is stalling or will not start, the car should not be driven.
General guidance, not a professional inspection. Confirm faults with measurements before buying parts, and use a qualified mechanic for brakes, steering, fuel leaks, airbags, and other safety-critical work. Terms and disclaimer