Severity: Stop driving
Risk of engine damage or a safety problem. Park it and call the shop.
What P0335 means
The engine computer is not seeing a valid crankshaft position signal. Without it the engine may stall and not restart.
Symptoms
- Engine cranks but will not start
- Stalling, especially when hot
- Tachometer drops out
Common causes
Most likely first
- 1Failed crankshaft position sensor
- 2Damaged wiring or connector
- 3Damaged reluctor ring
- 4Debris on a magnetic sensor
How we diagnose it
- Check RPM signal on the scan tool while cranking
- Scope the sensor signal
- Inspect connector and wiring near the exhaust
Every vehicle sets codes under its own conditions. We check the factory diagnostic steps and service bulletins for your VIN, so the repair targets the actual cause.