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Home >> Audi >> 2002 >> S4 Quattro, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.7L Turbo >> Diagnostic Tests >> DTC P1131/17539 >> Notes

DTC P1131/17539: Notes

NOTE: Bank 2 HO2Ss refer to sensors on left side of engine. Bank 2 HO2S harness connectors are more easily accessed by temporarily moving coolant reservoir. Leave coolant hoses connected.

  1. DTC P1131/17539

    Bank 2 Heated Oxygen Sensor 1 - Internal Resistance Too High
NOTE: When Engine Control Module (ECM) switches HO2S heating on and off, it may be observed on scan tool. In display field 2 of display group 041, in diagnostic function 08 - READ MEASURING VALUE BLOCK.