S6 Quattro Sedan V10-5.2L (BXA) (2007)
Oxygen Sensor: Locations
Component Locations Overview
Oxygen sensor electrical connectors (on vehicle floor)
1
Heated Oxygen Sensor (HO2S) (G39) (in front of catalytic converter) black connection
2
Heated Oxygen Sensor (HO2S) 3 (G285) (in front of catalytic converter) brown connector
Oxygen sensor electrical connectors (at top of transmission)
1
Gray Oxygen Sensor (O2S) 4 Behind Three Way Catalytic Converter (TWC) (G288)
2
Black Oxygen Sensor (O2S) 3 Behind Three Way Catalytic Converter (TWC) (G287)
3
Brown Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130)
4
Brown Heated Oxygen Sensor (HO2S) 4 (G286) (in front of catalytic converter)
5
Black Heated Oxygen Sensor (HO2S) 2 (G108) (in front of catalytic converter)
6
Black Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131)