The engine oil passages through the camshafts the oil control valves are of small size and require only the manufacturer's recommended oil viscosity to be used.
Bank 2 intake camshaft position timing code#
Replacing the camshaft oil control valve for bank 2 intake camshaftĬhecking the timing chain and camshaft phasersĪdditional comments for consideration regarding the P0021 code Repairing or replacing the wiring to the camshaft oil control valve for bank 2 intake camshaft The fuel consumption may increase and carbon fouling of engine components may occur.Ĭlearing the Check Engine Light codes and road testing to verify the codeĬhanging the oil and filter to the proper oil viscosity for the engine specifications The engine may run erratically and have various drive complaints that could cause unsafe driving conditions if the engine hesitates or stalls.
Verify the failure code is active by clearing and retesting the code.įollow pinpoint tests step-by-step without skipping any steps. Common mistakes when diagnosing the P0021 codeįollow these simple guidelines to help prevent misdiagnosis:ĭo a visual inspection for problems, like checking to see if all electrical connectors are connected, or harness is damaged.Ĭheck engine oil to see if it is full, clean and of the correct viscosity. Note: The manufacturer's pinpoint test will be different for different engines and year of manufacturer. Performs the manufacturer's pinpoint tests for the P0021 code Scans and documents the codes then views the freeze frame data to see when the code was setĬlears the OBD-II fault codes and retests the vehicle to see if the P0021 code comes back
Bank 2 intake camshaft position timing full#
Visually inspects for damaged wiring or connectorsĬhecks the engine for sludge and for the engine to be full of clean engine oil with the correct viscosity How does a mechanic diagnose the P0021 code? 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. The engine may idle normally but can hesitate or stall on acceleration.Ī reduction in fuel mileage may happen due to the camshafts not being at an optimal position. The ECM will turn on the Check Engine Light. The camshaft phaser is stuck in the advanced position. This can be from the wrong oil or lack of oil changes. The oil is too thick, causing the passages to become clogged. The Oil Control Valve (OCV) connected to the bank 2 camshaft may be stuck or have clogged oil passages. The camshaft is more advanced when it has been commanded to retard to a lower timing level. 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. P0021 is the OBD-II generic code indicating that the Engine Control Module (ECM) has determined that the bank 2 intake camshaft is more advanced than what the ECM has commanded it to be. Camshaft Position A - Timing Over-Advanced or System Performance (Bank 2) What the P0021 code means
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