CarSense › Trouble codes › P0011

P0011: Camshaft Position 'A' - Timing Over-Advanced or System Performance (Bank 1)

What this check-engine code means in plain English, what usually causes it, and what a fix typically costs.

Severity: Monitor — not an emergency, but don't ignore it

What P0011 means

This code means the engine computer detected that the intake camshaft timing on Bank 1 (the side with cylinder #1) is more advanced than commanded, or the variable valve timing (VVT) system isn't responding properly. Modern engines adjust camshaft timing for better performance and fuel economy, and this code indicates the system isn't working as intended.

What causes P0011?

Likely
Low or dirty engine oilInsufficient oil level or contaminated oil prevents the VVT system from operating correctly, as it relies on oil pressure to adjust cam timing.
Likely
Faulty camshaft position actuator solenoidThe solenoid valve that controls oil flow to the VVT system may be stuck, clogged, or electrically failed.
Possible
Timing chain or belt stretched/wornA worn timing chain or belt can cause incorrect cam timing that the VVT system cannot compensate for.
Less common
Failed camshaft position actuatorThe mechanical actuator (phaser) attached to the camshaft may be internally damaged or seized.

Is P0011 safe to drive?

Drive it?
Usually yes, short-term
Watch for
Rough idle, reduced power, or poor fuel economy
DIY-friendly?
Check oil level and condition first; solenoid replacement is moderate DIY skill.

You can typically continue driving short distances, but performance and fuel economy may suffer. Address this within a few days to prevent potential engine damage from prolonged incorrect cam timing or oil starvation issues.

P0011 repair cost

~$150 – $900+

Industry-average estimates. Cost depends on whether it's a simple oil change and solenoid replacement or requires timing chain work and camshaft actuator replacement.

Which one is it for your car?

Plug a cheap OBD2 adapter into your car and CarSense reads your codes and tells you the likely cause and a real cost for your exact vehicle — free to scan, no proprietary dongle.

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