![]() YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. If too thick or thin oil is used, the camshaft timing phasers may not change the camshaft timing advance as the manufacturer’s designed them to and may cause premature failure of camshaft and related engine components from lack of proper lubrication. The engine oil passages through the camshafts and oil control valves are a specific size and only the manufacturer's recommended oil viscosity should be used. Checking the timing chain alignment for jumped timing problemsĪdditional comments for consideration regarding the P0011 code.Replacing the camshaft oil control valve for bank 1 intake camshaft.Repairing or replacing the wiring to the camshaft oil control valve for bank 1 intake camshaft.Changing the oil and filter to the proper oil viscosity for the engine specifications.Resetting the fault codes and performing a road test.The engine may have excessive fuel consumption, carbon fouling of engine components, and various drive complaints depending on the camshaft failed position.ĭriving the vehicle for prolonged time with the camshafts not advancing or retarding may cause other problems to the valve train or engine depending on the cause of the failure. The engine may run erratic and stall, hesitate, run rough, or have a hard starting condition. The manufacturer pinpoint test procedures should be followed step-by-step without skipping any steps to prevent a misdiagnosis and replacing of good components.ĭo not replace any sensors or components unless tests indicate a problem. Test to verify the code coming back before any further tests are done. Common mistakes when diagnosing the P0011 code?įollow these simple guidelines to prevent mistakes:Īlways do a visual inspection for common problems like checking to see if all electrical connectors are connected.Ĭheck engine oil to see if it is full, clean, and of the correct viscosity.Ĭheck, document and clear failure codes. Note: Follow the manufacturer's recommended pinpoint test to narrow down the problem since each engine may be tested differently and possible engine internal damage may be done if tests are not performed in accordance with a correct procedure. If the code returns, then the next step for the technician to do is perform a manufacturer's specific pinpoint test for the P0011 code and repair as needed. ![]() The codes should then be reset to clear the OBD-II fault codes and retest the vehicle to see if the P0011 code comes back. The technician will scan and document the codes received and view the freeze frame data to see when the code was set. How does a mechanic diagnose the P0011 code?Ī visual inspection to determine any electrical connector, wiring, or valve issues of the camshaft oil control valve for the bank 1 intake camshaft.Ĭheck the engine for it to be full of clean engine oil with the correct viscosity. Note: The symptoms may change depending on the camshaft timing positions when the camshaft stopped advancing or retarding. ![]() The engine emissions may exceed federal levels and fail an emissions test. The engine may run rough, hesitate, or stall depending on camshaft positions. 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 ![]()
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