![]() ![]() This causes a gradual buildup of oil sludge within the engine. An issue that especially plagued early-generation variable valve timing technology is related to this in fact.Īs oil refinement became increasingly advanced, owners started to push their service intervals. Oil Quality Or Pressureīecause of the dependence on good oil pressure for the cam phaser to operate, you’d need your engine’s oil system to be in good shape. ![]() The idea of utilizing circulating oil is ingenious but reveals a potential flaw. If you understand how camshaft-phasers operate, then you’d have a good idea of its main strength and flaw: dependence on oil pressure. It’s also working in tandem with the piston movement. Depending on the engine load, it needs to breathe in fresh air sooner or later to remain efficient. Due to how an internal combustion engine functions, it has a variable powerband. The engine camshaft controls how the engine breathes and when it breathes.Ĭamshaft adjustment, or phasing, aims to control the latter of the two. While there might be slight disparities between manufacturers, the idea behind cam phasing is the same. It’s an ingenious system that has been ubiquitous in cars for decades by now. To understand the roots of the fault though, it helps to comprehend how camshaft adjustments are carried out. So if your ECU is expecting to see 5 to 10 degrees of advance, and it’s actually reading 15 degrees, it determines that the camshaft is over-advanced. It means that your camshaft phasing is beyond the range of value attributed to different operating conditions that are pre-defined in the ECU. It’s important to note that over-advancing doesn’t mean that your camshaft is broken or phased beyond limits. Advance or retard refers to how far your camshaft is rotated clockwise or counter-clockwise respective to its basic ‘zero’ position. This fault condition is determined once it repeatedly occurs when your ECU is commanding exhaust camshaft phasing, whether it’s advance or retard. The oil control valve itself may need replaced if it is overly worn or damaged.Replaced Camshaft Position Sensor But Still Get Code? This will be determined during the visual inspection. The wiring for the oil control valve for the bank 1 exhaust camshaft may need to be repaired or replaced. When replacing the oil, make sure to check the manufacturer’s recommendations to ensure the right product is used. Replacing the oil can help resolve the error code if there was an issue with the viscosity. Resetting the error and performing a road test will help determine the conditions which result in the error, making it easier to fix. Replacing any components without determining the specific problem is likely to result in the error reoccurring and the repair becoming more expensive than it needs to be. It’s important that pinpoint diagnostic testing is undertaken to ensure the exact cause of the error is determined. If the timing changes, it indicates that the issue is with the ECM or is potentially a wiring issue. If the error is triggered again, noting the circumstances can make it easier to perform a pinpoint diagnosis.Īnother diagnostic step is to monitor the timing data when disconnecting the oil control valve to the exhaust camshaft. The oil viscosity should be checked to see if it matches the manufacturer’s recommendation.Īs with most OBD2 error codes, it’s best to take a screen shot of the error before resetting and performing a road test to see if it reoccurs. In case of an error P0014, the wiring, valves and connections should be checked in the oil control valve of the bank 1 exhaust camshaft. The bank 1 oil control solenoid may have become stuck in an open positionĪs with most repairs, the first step is usually conduct a visual inspection of the common problem areas.The camshaft phaser may have become stuck in an advanced position.There is an issue with the viscosity of the engine oil which is clogging the passage to the camshaft phasers, restricting the flow of oil.The ECM has instructed the exhaust camshaft to retard to a lower level, however it has remained in an advanced position.There are several common causes of a P0014 error code, which can include: It’s likely that the car will fail an emissions test.The position of the camshaft can cause the engine to stall or run rough.The incorrect positioning of the camshaft can lead to increased fuel consumption.If the camshaft is stuck in an advanced position the engine may have a hard start.There are several common symptoms of an error code P0014. This can happen during the retarding or advancing of the camshaft timing, and leads to an over-advanced condition. The error code P0014 is triggered when the ECM determines the bank 1 exhaust camshaft is more advanced than it was instructed to be by the ECM. ![]()
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