2007 Buick P0011: What It Means & Is It Safe to Drive?
P0011 on the 2007 Buick: Camshaft Position A – Timing Over-Advanced or System Performance (Bank 1). Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
What this code means
The intake camshaft on bank 1 is more advanced than the PCM commanded, or the VVT system isn't responding as expected. Often caused by low/dirty oil or a faulty oil control valve.
Common causes on the 2007 Buick
- Low or dirty engine oil (most common—change oil first)
- Failed or sludged oil control valve (OCV/VVT solenoid)
- Stretched or worn timing chain
- Stuck VVT actuator (cam phaser)
Symptoms
- Check Engine Light
- Rough idle or rattling on cold startup
- Poor fuel economy
- Reduced power
Typical fixes
- Oil change with correct viscosity oil (often resolves it)
- Clean or replace oil control valve
- Replace timing chain if stretched
- Replace cam phaser if faulty
Repair cost range
For a 2007 Buick, repairs for P0011 typically fall between $50 and $1200, depending on the root cause and labor rates in your area.
Known issues on Buick
Buick 3.6L LFX cam timing over-advanced is typically a dirty OCV solenoid. On 2.0T Ecotec, P0011 from OCV screen clogging responds well to an oil change with 5W-30 full synthetic followed by solenoid screen cleaning.
Most commonly affected models