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Home >> BMW >> 2011 >> X6 ActiveHybrid >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Codes (ACTIVEHYBRID) - DTC P0040, BMW DTC 128008 Through DTC P300F, BMW DTC 138904 >> DTC P0155, BMW DTC 12B601: Oxygen sensor heating before catalytic converter 2, function: Normal operating temperature not reached >> Fault description

Fault description

The diagnostic function monitors the upper and lower temperature limits of precatalyst oxygen sensor 2.

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