Oxygen Sensor: Locations

Component location of oxygen sensors before catalytic converter





• In front exhaust pipe.

1. Heated Oxygen Sensor (HO2S) 2 (G108) before catalytic converter with Oxygen Sensor (O2S) 2 Heater ( Z28)

2. Heated Oxygen Sensor (HO2S) (G39) before catalytic converter with Oxygen Sensor (O2S) Heater (Z19 )

Component location of oxygen sensors behind catalytic converter





• In catalytic converters.

1. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) with Oxygen Sensor (O2S) 1 (behind Three Way Catalytic Converter (TWC)) Heater (Z29)

2. Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131) with Oxygen Sensor (O2S) 2 (behind Three Way Catalytic Converter (TWC)) Heater (Z30)