Home >> BMW >> 2013 >> 535xi >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - N55 - Diagnostic Trouble Codes - DTC P10C9 (BMW DTC 10BA42) Through DTC P0001 (BMW DTC 11C404) >> DTC P306E; BMW DTC 11AE02: Fuel supply system, oxygen sensor emissions control: lower limit undershot >> Fault code