Catalytic Converter, Removing And Installing: Removing

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2017 Audi A5 Quattro, 2016 Audi A5 Quattro, 2015 Audi A5 Quattro, 2014 Audi A5 Quattro, and 2014 Audi A5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

During Installation, Install All Cable Ties Back At The Same Position.

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

Connector Bracket, Version 1:

Fig 1: Component And Connectors

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-- Disconnect the Oxygen Sensor after Catalytic Converter -G130- and Heater for Oxygen Sensor 1 after Catalytic Converter -Z29- connector -1- and free up the wires.

-- Disconnect the connector -2- for the Heated Oxygen Sensor -G39- and Oxygen Sensor Heater -Z19- and free up the wires.

Connector Bracket Version 2:

Fig 2: Identifying Heated Oxygen Sensor & Connector

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-- Disconnect the connector -arrow- for the Heated Oxygen Sensor -G39- and free up the wires.

Connector Bracket Version 3:

Fig 3: Oxygen Sensor Harness Connector

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-- Disconnect the connector -arrow- for the Oxygen Sensor after Catalytic Converter -G130- and free up the wires.

Continuation For All Vehicles:

-- Remove the air filter housing. Refer to AIR FILTER HOUSING, REMOVING AND INSTALLING .

-- Remove the noise insulation. Refer to NOISE INSULATION, REMOVING AND INSTALLING .

Vehicles With Parking Heater (CANADA ONLY)

Fig 4: Clamping Upper Coolant Lines On Coolant Pipe With -3094-

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-- Clamp off the parking heater coolant lines at the top using : 3094 and disconnect them.

-- Remove the coolant lines from the body -1-.

-- Clamp off the parking heater coolant lines at the bottom using : 3094 and disconnect them.

Fig 5: Clamping Lower Coolant Pipes On Coolant Pipe With -3094-

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-- Disconnect and remove the coolant lines -1- from the body.

All

Fig 6: Identifying Catalytic Converter

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-- Remove the front exhaust pipe/front muffler. Refer to FRONT EXHAUST PIPE, REMOVING AND INSTALLING .

-- Disconnect the threaded connection -1-, remove the screw -2- and remove the catalytic converter mounting.

-- Remove the bolts -arrows- and remove the right drive axle heat shield.

Fig 7: Drive Axle Heat Shield

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-- Remove the nuts -arrows- and remove the catalytic converter upward.

Fig 8: Identifying Catalytic Converter Flange Nuts

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