Oxygen Sensors Assembly Overview

Oxygen Sensors Assembly Overview





I - Primary catalytic converter for cylinder 1, 2, 3 (exhaust bank I)

II - Primary catalytic converter for cylinders 4, 5 (exhaust bank II)

III - Primary catalytic converter for cylinder 6, 7, 8 (exhaust bank III)

IV - Primary catalytic converter for cylinders 9, 10 (exhaust bank IV)

1 - Oxygen Sensor (O2S) 3 Behind Three Way Catalytic Converter (TWC) (G287) with Oxygen Sensor (O2S) 3 (behind Three Way Catalytic Converter (TWC)) Heater (Z64)

• Exhaust bank III (cylinder 6, 7, 8)

• Location of electrical connector => [ Location of electrical connectors for oxygen
sensors , , , , , ]

• Removing and installing, refer to => [ Heated Oxygen Sensors before Catalytic Converter ] Heated Oxygen Sensors before Catalytic Converter

2 - Heated Oxygen Sensor (HO2S) 3 (G285) before catalytic converter with Oxygen Sensor (O2S) 3 Heater (Z62)

• Exhaust bank III (cylinder 6, 7, 8)

• Location of electrical connector => [ Location of electrical connectors for oxygen
sensors and ]

• Removing and installing, refer to => [ Heated Oxygen Sensors before Catalytic Converter ] Heated Oxygen Sensors before Catalytic Converter

3 - Oxygen Sensor (O2S) 4 Behind Three Way Catalytic Converter (TWC) (G288) with Oxygen Sensor (O2S) 4 (behind Three Way Catalytic Converter (TWC)) Heater (Z65)

• Exhaust bank IV (cylinder 9, 10)

• Location of electrical connector => [ Location of electrical connectors for oxygen
sensors , , , , , ]

• Removing and installing, refer to => [ Heated Oxygen Sensors before Catalytic Converter ] Heated Oxygen Sensors before Catalytic Converter

4 - Heated Oxygen Sensor (HO2S) 4 (G286) before catalytic converter with Oxygen Sensor (O2S) 4 Heater (Z63)

• Exhaust bank IV (cylinder 9, 10)

• Location of electrical connector => [ Location of electrical connectors for oxygen
sensors , , , , , ]

• Removing and installing, refer to => [ Heated Oxygen Sensors before Catalytic Converter ] Heated Oxygen Sensors before Catalytic Converter

5 - Heated Oxygen Sensor (HO2S) 2 (G108) before catalytic converter with Oxygen Sensor (O2S) 2 Heater (Z28)

• Exhaust bank II (cylinder 4, 5)

• Location of electrical connector => [ Location of electrical connectors for oxygen
sensors , , , , , ]

• Removing and installing, refer to => [ Heated Oxygen Sensors before Catalytic Converter ] Heated Oxygen Sensors before Catalytic Converter

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

• Exhaust bank II (cylinder 4, 5)

• Location of electrical connector => [ Location of electrical connectors for oxygen
sensors , , , , , ]

• Removing and installing, refer to => [ Heated Oxygen Sensors before Catalytic Converter ] Heated Oxygen Sensors before Catalytic Converter

7 - Heated Oxygen Sensor (HO2S) (G39) before catalytic converter with Oxygen Sensor (O2S) Heater (Z19)

• Exhaust bank I (cylinder 1, 2, 3)

• Location of electrical connector

• Removing and installing, refer to => [ Heated Oxygen Sensors before Catalytic Converter ] Heated Oxygen Sensors before Catalytic Converter

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

• Exhaust bank I (cylinder 1, 2, 3)

• Location of electrical connector => [ Location of electrical connectors for oxygen
sensors , , , , , ]

• Removing and installing, refer to => [ Heated Oxygen Sensors before Catalytic Converter ] Heated Oxygen Sensors before Catalytic Converter

Location of electrical connectors for oxygen sensors (G39) and (G285)





• 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

Location of electrical connectors for oxygen sensors (G108), (G130), (G131), (G286), (G287), (G288)





• 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 for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130)

4. Brown for 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)