Trouble codes › P0017

P0017 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)

Engine timing

P0017 means the crankshaft and bank 1 exhaust camshaft signals are out of step, often a stretched timing chain.

The bank 1 camshaft B (usually exhaust) signal is out of step with the crankshaft signal beyond what valve timing can explain. Often the timing chain has stretched.

Can I keep driving? Not if you can avoid it.

Avoid driving if it rattles, runs badly or is hard to start: a jumped or badly stretched chain can lead to serious engine damage.

Common causes

  1. A stretched timing chain or worn guides and tensioner
  2. A stuck or worn exhaust cam phaser
  3. Low or dirty oil
  4. A failing camshaft or crankshaft sensor (less common)

Symptoms

  • Check-engine light, often with P0016 or P0008
  • Rattle at start-up
  • Rough running

Common on: GMC Acadia

Known problems: GM 3.6L V6 timing chain stretch · GM 2.4L Ecotec oil consumption and timing chain wear · Ford 5.4L 3-valve cam phasers and timing

What to check first

  1. Check the oil level and condition.
  2. Look for service bulletins on timing chains for your engine.
  3. Check cam/crank correlation values with a scan tool if available.
  4. Confirm timing marks before replacing parts; it's usually a shop or advanced DIY job.

What does P0017 mean on your vehicle?

The likely cause depends on your engine. iRepair researches your exact year, make, model and engine (service bulletins, recalls and owner reports) and tells you what to check first. Your first 3 questions are free.

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Related codes

General guidance for P0017 on most vehicles. Some makers use the same code a little differently; confirm in the service information for your vehicle, put safety first, and see a professional when in doubt.