Heated Oxygen Sensor -G39- WITH Oxygen Sensor Heater -Z19-, REMOVING AND INSTALLING: Removing

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Disconnect the connector -2- for the Heated Oxygen Sensor -G39- from the bracket.

Fig 1: Component Location On Plenum Chamber Bulkhead

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector and free up the wire to the oxygen sensor.

-- Remove the oxygen sensor -5- using a tool from the Ring Wrench 7-Piece Set3337.

Fig 2: Identifying Installation Location Inside Exhaust System Tract

Courtesy of AUDI OF AMERICA, LLC