Oxygen Sensors

Oxygen Sensors

Special tools, testers and auxiliary items required

• Ring spanner 7-piece set for oxygen sensor (3337)

Removing

• During installation, reinstall all heat insulation sleeves and heat shields at the same locations.

• All cable ties opened or cut during engine removal must be reinstalled at the same locations during installation.

- Remove engine.

- Leave engine with transmission installed on the scissor lift platform (VAS 6131).

- Remove right oxygen sensor connection heat shield from transmission - arrows -.





- Remove affected oxygen sensor electrical connector from bracket on 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)

- Disconnect affected electrical connector and free up electrical wiring.

Left exhaust tract:





- Remove affected oxygen sensor with the Ring spanner 7-piece set for oxygen sensor (3337).

1. Heated Oxygen Sensor (HO2S) 4 (G286) (in front of catalytic converter)

2. Oxygen Sensor (O2S) 4 Behind Three Way Catalytic Converter (TWC) (G288)

3. Oxygen Sensor (O2S) 3 Behind Three Way Catalytic Converter (TWC) (G287)

Right exhaust system tract:





- Remove affected oxygen sensor using tool from Ring spanner 7-piece set for oxygen sensor (3337).

1. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130)

2. Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131)

3. Heated Oxygen Sensor (HO2S) 2 (G108) (in front of catalytic converter)

Installing

Installation is in reverse order of removal, note the following:

• New oxygen sensors are coated with assembly paste; the paste must not get into slots of oxygen sensor body.

• For a used oxygen sensor, only coat threads with hot bolt paste. This paste must not come into contact with sensor slots. Hot bolt paste.

• Electrical wire of oxygen sensor must always be secured in the same position when installing so that contact with the exhaust pipe is avoided.

- Install engine.

Tightening Specifications