Catalytic Converter, Removing And Installing: Removing

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2016 Audi A4 Quattro, 2016 Audi A4, 2015 Audi A4 Quattro, 2014 Audi A4 Quattro, and 2013 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

When installing, bring all cable ties back to same positions.

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:

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

Fig 2: Heated Oxygen Sensor - G39-

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Connector Bracket Version 3:

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

Fig 3: Oxygen Sensor After Catalytic Converter - G130-
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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

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 Hose Clamps - Up To 25mm 3094 and disconnect them.

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

-- Clamp off the parking heater coolant lines at the bottom using Hose Clamps - Up To 25mm 3094 and disconnect them.

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

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

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All

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

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

Fig 6: Identifying Catalytic Converter

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

Fig 7: Drive Axle Heat Shield & Bolts

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-- Remove the nuts -arrows- and remove the turbocharger upward.

Fig 8: Identifying Nuts

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