Home >> BMW >> 2013 >> 135is 2D Convertible, Automatic DCT Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - N55 - Diagnostic Trouble Codes - DTC P1638 (BMW DTC 100001) Through DTC P10EB (BMW DTC 10BA41) >> DTC P0122; BMW DTC 101002: Throttle valve, throttle-valve potentiometer 1, electric: short circuit to ground >> Fault code