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Home >> BMW >> 2012 >> Alpina B7x >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Diagnostic Trouble Codes - DTC P0035 - DTC P0480 (N63 & S63) >> Diagnostic Trouble Codes (DTCS) MSD85 - Bn2020 >> DTC P0056, BMW Hex Code 0x12B404, BMW Code 1225732: HO2S Heater Control Circuit (Bank 2 Sensor 2) >> Repair procedures (plant/service)

Repair procedures (plant/service)

-Check wiring harness to oxygen sensor 2 behind catalytic converter

-Replace post-catalyst oxygen sensor 2

-Replace DME

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