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Message: <blockquote data-quote="zidee" data-source="post: 683256" data-attributes="member: 20151"><p>By looking at your earlier posting, your engine is N42. Typically if Valvetronic motor problem, you car rather hesitence to move with sound like heavy knocking. If that is the case, you may open the valve cover, knock the silver colour valvetronic motor with something hard, preferably wood based. Start the engine and see how it goes. If its back to normal, if you may still need to plug in the diagnostic to confirm it then clear the error. If you use INPA or GT1, I think there is an option to do adaptation/learning. You may hear the valvetronic motor moving during the adaptation process.</p></blockquote><p></p>