Home >> BMW >> 2011 >> 135i 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - N55 - Diagnostic Trouble Codes - DTC P1638 (BMW DTC 100001) Through DTC P10EB (BMW DTC 10BA41) >> DTC P110D; BMW DTC 100A02: Throttle valve, throttle potentiometer 1 and 2: Double fault >> Fault code