Home >> BMW >> 2013 >> 760Li >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis (N74) - 760LI - DTC P10B6 - P2273 (BMW DTC 10C004 - 12A201) >> DTC P2271: BMW DTC 12A101; DME -- O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 2) >> Action in service