P0335: Crankshaft Position Sensor A Circuit Malfunction
System: Engine position · Priority: high
What P0335 means
The control module detected a condition matching the generic definition Crankshaft Position Sensor A Circuit Malfunction. A trouble code identifies what the module detected; it does not automatically identify the failed part.
Useful next checks
- Inspect crank-sensor wiring and connector.
- Check RPM signal while cranking with a scan tool.
- If no RPM is seen, confirm sensor power/ground and reluctor condition before replacement.
Why vehicle context matters
The same generic code can have different diagnostic paths depending on engine, calibration, wiring layout, service bulletins and related codes. Freeze-frame and live data can help establish when the fault occurred.
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