OBD-II code · Powertrain (generic)
P0011 "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
The bank 1 intake camshaft is more advanced than commanded, or the actuator does not respond as expected. Often caused by stuck-open oil control valves, sludge in VVT passages, or low oil pressure.
Is it safe to drive with P0011?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOil control valve stuck (advance position)
- PossibleSludge or debris in VVT oil passages
- PossibleLow engine oil pressure or wrong oil viscosity
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–4 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Camshaft Position Actuator, Oil Control Valve, Engine Oil
Related codes
- P000EFuel Volume Regulator Control Exceeded Learning Limit
- P000FFuel System Over Pressure Relief Valve Activated
- P0010"A" Camshaft Position Actuator Circuit (Bank 1)
- P0012"A" Camshaft Position - Timing Over-Retarded (Bank 1)
- P0013"B" Camshaft Position Actuator Circuit (Bank 1)
- P0014"B" Camshaft Position - Timing Over-Advanced (Bank 1)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.