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Home >> BMW >> 2012 >> 640i 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - N55 - Diagnostic Trouble Codes - DTC P1638 (BMW DTC 100001) Through DTC P10EB (BMW DTC 10BA41) >> DTC P1631; BMW DTC 107A81: Throttle-valve actuator, closing spring check: error during spring check >> Fault description

Fault description

During the spring test the diagnostic function monitors the throttle valve to determine whether it reaches the specified position within the specified period.

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