Engine

P0011 — Intake Camshaft Timing Over-Advanced (Bank 1)

Severity: medium Drive with care, to a shop

What P0011 means

The PCM compares the commanded intake camshaft angle on bank 1 with the actual angle from the camshaft and crankshaft position sensors. The angle is changed by a cam phaser, which an oil control (VVT) solenoid operates with oil pressure. P0011 sets when the actual timing is advanced beyond the allowed range and the PCM cannot correct it.

Symptoms

  • Check Engine light on
  • Rough or unstable idle
  • Hard starting, especially when cold
  • Engine may stall
  • Reduced power and sluggish acceleration
  • Worse fuel economy
  • Rattle from the front of the engine

Possible causes

  1. Low oil level, dirty oil or wrong viscosity
  2. Stuck or faulty VVT oil control solenoid
  3. Sludge clogging oil passages to the cam phaser
  4. Stretched timing chain, weak tensioner or jumped tooth
  5. Damaged wiring or connector at the VVT solenoid
  6. Faulty camshaft or crankshaft position sensor
  7. Failed or jammed cam phaser

How to diagnose

  1. Scan for codes and freeze frame data, and look for related cam or crank sensor codes
  2. Check oil level, condition and viscosity against the specification
  3. Inspect the VVT solenoid connector and harness for corrosion, chafing or breaks
  4. Compare commanded and actual cam angle in live data
  5. Command the VVT solenoid with a scan tool and watch the timing response
  6. Remove the solenoid and inspect it and its screen for debris
  7. Test solenoid resistance and power/ground per the manufacturer's specs
  8. If the deviation persists, check timing marks and chain wear

Common fixes

  • Change oil and filter with the correct viscosity and approval
  • Replace the VVT oil control solenoid
  • Clean the oil passages feeding the cam phaser
  • Replace the timing chain, tensioner, guides or cam phaser
  • Repair VVT wiring and connectors

P0011 on different brands

Ford · manuals
On Ford, P0011:00 in the 2024-2025 gasoline OBD monitor strategy means bank 1 intake camshaft timing was detected as over-advanced; it identifies the monitor condition, not a confirmed failed part.

Questions and answers

What does P0011 mean?

Bank 1 intake camshaft timing is advanced further than allowed. Oil problems and a faulty VVT solenoid are the most common causes, with timing chain wear less often.

Can I drive with P0011?

Briefly and gently, if the oil level is adequate. Find the cause soon, since a stretched chain or low oil can lead to costly engine damage.

Will an oil change fix P0011?

Often, if the cause was low, dirty or wrong-viscosity oil. If the code returns, check the VVT solenoid, oil passages and timing chain.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.