Code
P0335
Ignition / Crank
Crankshaft position sensor circuit malfunction
The ECM has no valid crankshaft position signal, which can prevent starting.
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Most likely causes
- Faulty crank sensor
- Wiring fault
- Wrong sensor gap
- Damaged reluctor ring
Symptoms you may notice
- Engine may not start
- Intermittent stalling
- Check engine light
Checks to run
- Test sensor signal with a scope
- Check air gap
- Inspect wiring
Tools you may need
Multimeter
Oscilloscope
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.