Home >> BMW >> 2012 >> 335i 2D Convertible, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - N55 - Diagnostic Trouble Codes - DTC P10C9 (BMW DTC 10BA42) Through DTC P0001 (BMW DTC 11C404) >> DTC P2097; BMW DTC 118601: Oxygen sensor before catalytic converter, fine mixture control: exhaust gas after catalytic converter too rich >> Fault code