OBD-II diagnostic trouble code
P0011Caution
Intake Camshaft Position Timing Over-Advanced (Bank 1)
This engine uses variable valve timing to adjust when the intake camshaft opens the valves. The computer has detected that the camshaft is positioned further "advanced" than commanded — the variable timing system isn't tracking its target position accurately.
Symptoms
- Rough idle and reduced low-end power
- A rattling or ticking noise from the timing chain area, especially on startup
- Reduced fuel economy
- Possible slight hesitation during acceleration
Likely causes
- Low engine oil level or badly degraded oil — the variable timing solenoid relies on oil pressure to actually move the camshaft, and dirty/low oil is the single biggest cause
- A clogged variable timing (VVT) oil control solenoid, often from sludge buildup
- Timing chain stretch/wear letting the camshaft drift out of its intended position
- A failed VVT solenoid itself
How to diagnose it
- Check oil level and condition first — this resolves a large share of VVT-related codes on its own
- Inspect and, if needed, clean the VVT oil control solenoid (often accessible without major disassembly)
- If oil and solenoid are fine, check for timing chain stretch using the manufacturer's specified procedure
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Code names are compiled from open/standardized SAE and ISO references. Explanations, symptoms, causes and fixes are original. Covers generic (P0/C0/B0/U0) codes only — manufacturer-specific codes are planned for a future update.
Frequently asked questions
Can I drive with P0011?
You can usually keep driving with P0011, but don't put it off — the underlying cause can get worse or lead to further damage the longer it goes unaddressed. Get it diagnosed as soon as you reasonably can.
How much does it cost to fix P0011?
Typical repair costs for {code} range from roughly 60 to 1500 EUR, depending on the specific cause and your car — see the fixes listed above for a breakdown.
What causes P0011?
Low engine oil level or badly degraded oil — the variable timing solenoid relies on oil pressure to actually move the camshaft, and dirty/low oil is the single biggest cause A clogged variable timing (VVT) oil control solenoid, often from sludge buildup Timing chain stretch/wear letting the camshaft drift out of its intended position
Reviewed by Artyom SemenovAutomotive Editor · Fact-checked by Yauheni Kapliarchuk, Editor-in-Chief