Home >> BMW >> 2011 >> 335i 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - N55 - Diagnostic Trouble Codes - DTC P10C9 (BMW DTC 10BA42) Through DTC P0001 (BMW DTC 11C404) >> DTC P306D; BMW DTC 11AE01: Fuel supply system, oxygen sensor emissions control: upper limit exceeded >> Fault code