S8 Quattro Sedan V10-5.2L (BSM) (2009)
Oxygen Sensor: Locations
Component Locations Overview
Oxygen sensors before catalytic converter
1
Heated Oxygen Sensor (HO2S) 4 (G286) with Oxygen Sensor (O2S) 4 Heater (Z63) in front of catalytic converter
2
Heated Oxygen Sensor (HO2S) 2 (G108) with Oxygen Sensor (O2S) 2 Heater (Z28) in front of catalytic converter
Oxygen sensor locations
1
Heated Oxygen Sensor (HO2S) 3 (G285)
2
Oxygen Sensor (O2S) 4 Behind Three Way Catalytic Converter (TWC) (G288)
3
Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131)
4
Oxygen sensor (G39)
Oxygen Sensor (O2S) 3 Behind Three Way Catalytic Converter (TWC) (G287) - arrow -