![]() Checking your oil level is easy enough, but do take precautions that a low oil level hints at a potential leak. It’s not just delayed intervals, some owners also switch to inferior oil or the wrong oil that can be too viscous for proper VVT operation.ĭue to how it’s tied to oil pressure, the wrong oil level can also trigger the P0014 code. This clogging impacts the operating pressure and thus affects the operation of the cam phasers. The effects are not immediately apparent, but over time the sludging can be severe enough to clog up the oil channels. 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. What are the possible causes for this over-advanced condition though? We know that the P0014 code is triggered by the camshaft timing being advanced out of its range. It is this action that actually rotates the camshaft to induce earlier or later valve operation. Modern applications incorporate an electric solenoid that can continuously modulate oil flow and thus pressure, to the camshafts. The camshafts can be thought of as ‘floating’ on the pulley, which has channels inside to allow oil flow. It’s important to note that the impact of VVT on performance is rather minimal, as its main purpose is to improve efficiency and emissions.Ĭommonly, a camshaft adjustment operation is carried out by a phaser at the front of the camshaft. It’s the process of changing the timing of when the valves are operated to better optimize engine efficiency. This is what’s known as variable valve timing (VVT). 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 advanced or retard. If you have a V-engine, it specifically indicates that the first bank exhaust camshaft is over advanced. The ‘P0014’ fault code is a standardized OBD-II code denoting that the ECU has identified a problem with the engine’s exhaust camshaft position, where it’s more advanced than what the ECU has specified. Frequently Asked Questions (FAQs) P0014 Code. ![]() Plug the scanner in if your engine control unit (ECU) is indicating a fault: P0014 “B Camshaft Position – Timing Over-Advanced”. If you own a somewhat modern (post-2000) car, definitely consider purchasing an OBD2 scanner (and learning how to use OBD2 scanner). Thanks to modern vehicle networking though, it has interpreted warning lights with less ambiguity. When the garages are closed is typically where your instrument cluster might illuminate a warm orange check engine light, which is a sign of diagnostics issues like P0014.
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