Heated Oxygen Sensor Before Catalytic Converter

Heated Oxygen Sensor before Catalytic Converter

Removing

Special tools, testers and auxiliary items required

• Ring Spanner 7-piece Set (3337)

- Disconnect electrical harness connector - 1 - of the Heated Oxygen Sensor (HO2S) (G39) and Oxygen Sensor (O2S) Heater (Z19).





- Remove Heated Oxygen Sensor (HO2S) (G39) - 2 - using a tool from the Ring Spanner 7-piece Set (3337).





Installing

When installing, 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.

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

• Tightening specifications: 55 Nm.