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Home >> BMW >> 2016 >> M4 Base, 2D Convertible, Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Self Diagnosis - Diagnostic Trouble Codes (S55) >> Fault Code Tests >> DTC P2254: BMW DTC 12BD61; DME -- O2 Sensor Negative Current Control Circuit/Open (Bank 2 Sensor 1) >> Fault description
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Fault description

The diagnosis monitors the internal resistance and output voltage of oxygen sensor 2 before catalytic converter.

Fault monitoring conditions:

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