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What causes incorrect camshaft allocation in the EA888 engine?

2 Answers

McAva

07/24/25 1:58am

The occurrence of EA888 fault codes is mostly due to discrepancies in data transmission between the Hall sensor and the crankshaft position sensor. Below are the relevant explanations: Incorrect timing: When this situation occurs, check whether the timing is correct. Do not just look at the surface phenomenon. Some vehicles' crankshaft pulley may have skipped teeth, but this was not noticed when replacing the belt. Due to issues with the intake side of the bearing bridge, the intake camshaft side of the bearing bridge seat is approximately 1.72mm lower than the normal part. Slower regulator response: When the engine operating conditions reach the adjustment speed, the regulator response speed may slow down due to misalignment of the oil passages.

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VonAmir

08/10/25 9:33pm

The EA888 engine's camshaft timing is incorrect, and I've experienced this issue several times, mainly due to problems with the timing chain. The chain has a design flaw—over time, it stretches or wears out severely, causing the camshaft to lose precise control over valve opening and closing. For example, if the chain becomes loose and skips teeth, the timing gets disrupted. Additionally, if the tensioner fails and can't maintain proper chain tension, camshaft misalignment increases. Moreover, if the camshaft position sensor gets contaminated with oil or malfunctions, it sends incorrect signals, affecting the ECU's decisions. These issues often lead to engine knocking, poor acceleration, or the check engine light turning on. I recommend immediately visiting a repair shop to inspect the chain and tensioner—don't delay. Otherwise, prolonged neglect could cause severe engine damage. For this Volkswagen engine, regular maintenance of the chain system is crucial.

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