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P0017

Crankshaft/camshaft position correlation (Bank 1 Sensor B)

The ECU has detected incorrect correlation between the crankshaft and Bank 1 exhaust camshaft.

What this code means

The ECU has detected incorrect correlation between the crankshaft and Bank 1 exhaust camshaft.

Possible causes

  • Timing chain/belt stretch or incorrect timing
  • Camshaft or crankshaft sensor fault
  • VVT actuator problem
  • Reluctor/tone wheel fault
  • Oil-flow problem

Common symptoms

  • Check engine light
  • Rough running
  • Hard starting
  • Reduced power

Checks to make

  1. Check for related timing codes
  2. Check oil condition
  3. Inspect sensor wiring
  4. Verify mechanical timing and cam/crank correlation

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.