What does this code mean?
The camshaft is the shaft that helps open and close engine valves at the correct time. P0011 means bank 1 camshaft A, usually the intake camshaft, was more advanced than expected or did not respond correctly to control. It does not confirm a damaged timing chain.
Read it with the other codes
P0014 concerns camshaft B, usually exhaust. Oil-control evidence matters before interpreting either code as a stretched chain.
Possible causes to investigate
These are possibilities, not a diagnosis or a ranked list of failed parts.
What to do first
- Record recent oil changes, the oil specification used and any startup rattle. Check the oil level only as the handbook directs.
- Do not keep running an engine with an oil-pressure warning or severe mechanical noise. Stop safely and seek assistance.
What the workshop can check
Ask whether commanded and actual cam positions agree, and whether the oil supply and control system were checked before proposing timing-chain work. Procedures depend on the exact engine.
A useful question to ask
Did the cam respond to its command, and were oil supply and control checked before mechanical timing?
Your vehicle changes the next step
Year, make, model, engine and the complete code list matter. Cylinder layout, test conditions and repair procedures can differ. Use service information for the exact vehicle; a generic code does not establish an exact failed part.
Can I keep driving?
This page cannot decide whether your car is safe to drive. A flashing engine light, severe shaking, overheating, strong fuel smell or major power loss calls for prompt attention. Stop safely when needed, follow your handbook and seek assistance rather than continuing a test drive.
Terms in this guide
These words appear in the explanation. Select an underlined term in the text to reach its definition.
- Camshaft
- A shaft with shaped lobes that help open engine valves at the right time. Intake valves let air in; exhaust valves let gases out.
- Bank 1 and bank 2
- A bank is a group of cylinders. Bank 1 contains cylinder 1; bank 2 is the other group, if present. Left or right cannot be assigned without identifying the engine.
- Intake
- The passages and components that bring air into the engine. The intake manifold distributes that air among the cylinders.
- Valve timing and advance
- Coordination between engine movement and valve opening. Advanced means it occurs earlier than expected, not that a part has moved physically forward.
- Range, threshold and performance
- A range is the expected interval; a threshold is a comparison limit. Performance describes whether something responds as expected, not necessarily how much power the engine makes.
- Cylinder and piston
- A cylinder is the chamber where fuel burns. A piston moves inside it and receives the force from combustion. Cylinder numbering depends on the engine.
- Spark plug, ignition coil and ignition
- In a gasoline engine, the coil generates the voltage for the spark plug to ignite the mixture. Diesel engines do not use this spark-ignition system.
- Actuator and solenoid
- An actuator turns a control command into physical action. A solenoid uses electricity and magnetism, for example to move a valve.
- Circuit, supply and ground
- A circuit includes the wiring and connections carrying electricity. Supply powers a component; ground is its electrical return. A fault in any of these can change a reading.
Sources and scope
Definitions and general OBD context are cross-checked against the references below. Manufacturer documents describe specific vehicles and systems; their procedures and thresholds are not instructions for every make. This is educational guidance, not a vehicle-specific repair procedure.