jrmangus
BMW X5 Drivetrain Malfunction After Valve Cover Replacement
Summary of the thread
After replacing the valve cover on a 2014 BMW X5, a 'Drivetrain malfunction' error and check engine light appeared. This issue may be caused by improperly reconnected electrical connectors or vacuum lines around the valve cover area. Ensuring all connections are secure and correctly attached could resolve the problem.
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BMW
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X5
CarlyMechanic
Double-check that all electrical connectors and vacuum lines around the valve cover area are properly reconnected and secure. A loose or disconnected sensor could trigger the check engine light and drivetrain malfunction error. Let me know if this resolves the issue or if you need further assistance.