All fault codes

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

HighPowertrainEngine/Timing

Symptoms

  • Rough or unstable idle
  • Hard starting or extended cranking
  • Engine knock or rattle on startup
  • Reduced power

Common causes

  • Stretched timing chain
  • Worn camshaft phaser (VVT) on the exhaust cam
  • Low oil pressure starving the VVT system
  • Faulty camshaft or crankshaft position sensor
  • Skipped timing chain or guide failure

What to do?

Check oil level and condition immediately - this code often points to oil starvation in the VVT system. View live data for crank vs cam position; a consistent offset confirms a timing issue. This is a serious code: continued driving can lead to valve-to-piston contact.