Home >> BMW >> 2014 >> 750Li >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Diagnostic Trouble Codes - Bank 1 (N63TU) >> Fault Code Tests >> DTC P0040: BMW DTC 128008; DME -- O2 Sensor Signals Swapped Bank 1 Sensor 1/Bank 2 Sensor 1 >> Fault effect and breakdown warning