DanielW211

Check Engine light and error code P0012 on a Mercedes E-Class

Hello everyone, I own a 2007 Mercedes E-Class with a gasoline engine and 178,000 km mileage. Currently, I have the problem that the check engine light is on. The fault memory shows an error in the automatic transmission, designated as P0012. This is a delayed adjustment of the intake camshaft on cylinder bank one. To me, this sounds more like an engine fault and not a transmission fault. Isn't this differentiated in the diagnosis? I'm new here and would appreciate your help!

(Translated from German)

The issue involves a 2007 Mercedes E-Class with a check engine light and error code P0012, indicating a delayed adjustment of the intake camshaft on cylinder bank one. This is an engine-related problem, not a transmission issue. Possible causes include low or dirty engine oil, which can affect camshaft timing, or a faulty camshaft position actuator. Checking and addressing these areas is recommended to resolve the problem.

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1 comment(s)

The P0012 code indeed relates to the engine, specifically to the camshaft timing. It indicates that the intake camshaft is over-retarded. Start by checking the engine oil level and condition, as low or dirty oil can affect the camshaft timing. If the oil is fine, inspect the camshaft position actuator for any signs of damage or wear. Let me know how it goes or if you have any further questions!

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MERCEDES

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EKLASSE