Oxygen Sensor After Catalytic Converter And Oxygen Sensor 1 Heater

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Ring spanner 7-piece set for oxygen sensor 3337

Removing oxygen sensor

-- Remove nuts -1 and 2- on cover.

Fig 1: Identifying Nuts -1- And -2- To Oxygen Sensor Electrical Connector Bracket And Bolt -3- To Electrical Wiring To Oxygen Sensor

Courtesy of AUDI OF AMERICA, LLC

-- Remove cover and disconnect electrical connector -arrow- on Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) -Z29-.

Fig 2: Electrical Connector -arrow-

Courtesy of AUDI OF AMERICA, LLC

-- Remove Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) -Z29- -arrow- using a tool from the Ring Spanner Set3337.

Fig 3: Oxygen Sensor Behind Catalytic Converter -arrow-

Courtesy of AUDI OF AMERICA, LLC

Installing oxygen sensor

When installing, note the following:

NOTE:

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.

Tightening specifications: 55 Nm.