What does code P0011 mean on a Subaru and is it safe to drive?
P0011: Camshaft Position A – Timing Over-Advanced or System Performance (Bank 1). Here's what it means on your Subaru, what usually causes it, what repairs typically cost, and how safe it is 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 for your Subaru
- 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 Subaru, repairs for P0011 often fall between $50 and $1200, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Subaru
Subaru FA20 and FB25 AVCS engines flag P0011 from oil sludge in the AVCS solenoid. Subaru specifies 0W-20 full synthetic; dirty oil is the primary cause and an oil change often resolves it.
Most commonly affected models