Home >> BMW >> 2013 >> 760Li >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis (N74) - 760LI - DTC P11EC - P1414 (BMW DTC 12A202 - 170301) >> DTC P0135: BMW DTC 12B501; DME -- O2 Sensor Heater Circuit (Bank 1 Sensor 1) >> Action in service