All OBD2 codes
P0011

Camshaft Position Timing Over-Advanced (Bank 1)

Moderate Severity

P0011 means the engine computer has detected that the camshaft timing on Bank 1 is more advanced than commanded. This relates to the variable valve timing (VVT) system, which adjusts cam timing for performance and efficiency.

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Common Symptoms

  • Check engine light on
  • Rough idle or engine rattle on startup
  • Reduced fuel economy
  • Lack of power or hesitation

Common Causes

  • 1.Dirty or failing VVT solenoid / oil control valve
  • 2.Low or dirty engine oil (VVT relies on oil pressure)
  • 3.Stretched timing chain (common on high-mileage engines)
  • 4.Faulty camshaft position sensor
  • 5.Clogged VVT oil passage

Confirm the fault before replacing parts. Many codes share symptoms — run a free guided diagnosis to identify the actual cause for your specific vehicle.

Frequently Asked Questions

Can low oil cause a P0011 code?

Yes. The VVT system uses oil pressure to adjust cam timing. Low or dirty oil is a leading cause. Check your oil level and condition first.

Is P0011 serious?

It can lead to poor performance and fuel economy. If caused by a stretched timing chain, ignoring it risks serious engine damage. Diagnose it promptly.

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