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Home >> BMW >> 2010 >> 550i Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - Diagnostic Trouble Codes - DTC P0035 - DTC P0480 (N63 & S63) >> Diagnostic Trouble Codes (DTCS) MSD85 - Bn2020 >> DTC P0161, BMW Hex Code 0x12B801, BMW Code 1226753: O2 Sensor Heater Circuit (Bank 2 Sensor 2) >> Possible Fault Causes

Possible Fault Causes

-Oxygen sensor 2 behind catalytic converter too strongly cooled by external factors (such as ice formation)

-Defect in wiring harness to oxygen sensor 2 behind catalytic converter

-Oxygen sensor 2 behind catalytic converter defective

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