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P0335

Crankshaft position sensor "A" circuit malfunction

The ECU has detected a fault in the crankshaft position sensor A circuit or signal.

What this code means

The ECU has detected a fault in the crankshaft position sensor A circuit or signal.

Possible causes

  • Failed crankshaft position sensor
  • Damaged wiring or connector
  • Reluctor/tone wheel problem
  • Incorrect sensor gap
  • Engine timing issue

Common symptoms

  • Check engine light
  • No-start or hard starting
  • Stalling
  • Intermittent loss of power

Checks to make

  1. Inspect sensor connector and wiring
  2. Check for related camshaft codes
  3. Review engine-speed signal while cranking
  4. Follow manufacturer sensor tests

Safety

  • Do not replace parts from the code alone. Confirm the fault with live data, wiring checks and manufacturer procedures. Keep clear of hot or moving engine components.

Model notes

The code definition is generic; exact diagnostic thresholds, component locations and repair procedures vary by vehicle.