P0011"A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- The engine control module compares the commanded position of the intake camshaft on bank 1 with the actual position it calculates from the camshaft and crankshaft sensors. This code is set when the camshaft sits further advanced than commanded for longer than a calibrated time, or, depending on the manufacturer, when the target is missed in either direction ("system performance"). Typical cause is a phaser that does not return to its rest position, for example because the oil control valve sticks open or its screen is clogged. Bank 1 is the cylinder bank that contains cylinder 1.
- What you may notice
- Check engine light on
- Rough or unstable idle, as valve overlap is too large
- Engine may stall at idle
- Rattling from the timing drive at cold start
- Higher fuel consumption
- Likely causes
- LikelyOil level too low, oil sludged or wrong viscosity
- LikelyScreen at the oil control valve clogged with debris
- LikelyOil control valve mechanically sticking
- PossibleCam phaser worn or its locking pin sticking
- RareTiming chain worn or fitted incorrectly after a repair
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.