OBD2 code P0011: "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
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.
Detected Root Component
Powertrain Component
Observed Symptoms
- 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
Possible Causes
- Oil level too low, oil sludged or wrong viscosity
- Screen at the oil control valve clogged with debris
- Oil control valve mechanically sticking
- Cam phaser worn or its locking pin sticking
- Timing chain worn or fitted incorrectly after a repair
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Parts likely to be the cause (Moteur (général))
Moteur (général)
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Frequently asked questions about code P0011
What does code P0011 mean? ▾
OBD2 code P0011: "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1). 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.
What are the symptoms of code P0011? ▾
Code P0011 may cause: 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. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code P0011? ▾
The most common causes of code P0011 are: Oil level too low, oil sludged or wrong viscosity, Screen at the oil control valve clogged with debris, Oil control valve mechanically sticking, Cam phaser worn or its locking pin sticking. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code P0011? ▾
Code P0011 has moderate severity (Warning). Short-term driving remains possible, but a prompt check is recommended to prevent worsening.
How do I fix code P0011? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Oil level too low, oil sludged or wrong viscosity, Screen at the oil control valve clogged with debris, Oil control valve mechanically sticking, Cam phaser worn or its locking pin sticking. Difficulty: Medium · Estimated time: 30-60min.