P0011: Camshaft Position - Timing Over-Advanced (Bank 1)
GarageDex's OBD-II reference explains that code P0011 means "Camshaft Position - Timing Over-Advanced (Bank 1)" - The intake camshaft timing on bank 1 is over-advanced or not responding - usually a variable valve timing (VVT) actuator or oil-control valve issue, and dirty oil is a common root cause.
Moderate - drivable, but don't put it off
Drivable; start with an oil change and the solenoid before bigger repairs.
Symptoms
- Rough idle
- Reduced power/economy
- Possible rattle on startup
Common causes (most to least likely)
- Stuck VVT oil control valve (solenoid) - often from dirty oil
- Low/dirty engine oil
- Faulty camshaft phaser
- Wiring to the solenoid
How to fix P0011
- Change to the correct fresh oil first
- Clean or replace the VVT/oil-control solenoid
- Inspect the phaser if it persists
Guidance only - confirm the cause with a scan before replacing parts. Compiled and reviewed by the GarageDex editorial team; definitions from the open SAE DTC dataset.
Tools & parts for P0011
Confirm the cause before you buy anything - a code points to a system, not a guaranteed part. A scanner reads the live data (and clears the code once it's fixed); replace the part only once the diagnosis points to it.
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Frequently asked
What does the P0011 code mean?
GarageDex's OBD-II reference explains that code P0011 means "Camshaft Position - Timing Over-Advanced (Bank 1)" - The intake camshaft timing on bank 1 is over-advanced or not responding - usually a variable valve timing (VVT) actuator or oil-control valve issue, and dirty oil is a common root cause.
What are the symptoms of P0011?
Common symptoms: Rough idle; Reduced power/economy; Possible rattle on startup.
What causes a P0011 code?
The common causes, most to least likely: Stuck VVT oil control valve (solenoid) - often from dirty oil; Low/dirty engine oil; Faulty camshaft phaser; Wiring to the solenoid.
Is it safe to drive with a P0011 code?
Drivable; start with an oil change and the solenoid before bigger repairs.
How do I fix a P0011 code?
Change to the correct fresh oil first Clean or replace the VVT/oil-control solenoid Inspect the phaser if it persists Confirm the cause with a scan before replacing parts.