The engine will have a reduction in fuel mileage due to the camshafts not being in their optimal positions to get the best fuel mileage. The engine may have a hard start condition if the cam is stuck in a too far advanced or retarded timing position. The ECM will turn on the Check Engine Light and command the camshaft to go to its normal starting position if possible. The camshaft phasers are stuck in the advanced position. The oil is too thick causing the passages to become clogged due to lack of oil flow to and from the camshaft phasers. The oil control solenoid to the bank 1 camshaft may be stuck or have clogged passages. The camshaft is too advanced when the ECM has commanded the camshaft to retard to a lower timing level. The camshaft and crankshaft sensors have indicated the camshaft is more advanced than the ECM has commanded it to advance. This over-advanced condition could be during advancing or retarding of the camshaft timing.
P0011 is the OBD-II generic code indicating the engine control module (ECM) has determined that the bank 1 intake camshaft is more advanced than what the ECM has commanded it be. Camshaft Position “A” - Timing Over-Advanced or System Performance (Bank 1) What the P0011 code means
