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Home >> Audi >> 2012 >> A5 2.0T >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust System, Emission Controls [CABB, CABA, CABD, CAEA, CAEB, CDHB, CDNB, CDNC, CDHA, CDZA, CADA, CCUA, CFKA, CPMA, CAED, CPMB] (Cabriolet) >> 26 Exhaust System, Emission Controls >> Emissions Control System >> Catalytic Converter, Removing And Installing >> Removing

Catalytic Converter, Removing And Installing: Removing

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
GWWA24-10590Courtesy of AUDI OF AMERICA, LLC

-- 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
GWWA24-10993Courtesy of AUDI OF AMERICA, LLC

-- 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
GWWA24-11274Courtesy of AUDI OF AMERICA, LLC

-- 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-
GWWA26-10813Courtesy of AUDI OF AMERICA, LLC

-- 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-
GWWA26-10814Courtesy of AUDI OF AMERICA, LLC

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

All 

Fig 6: Identifying Catalytic Converter
GWWA21-10310Courtesy of AUDI OF AMERICA, LLC

-- 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
GWWA37-10841Courtesy of AUDI OF AMERICA, LLC

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

Fig 8: Identifying Catalytic Converter Flange Nuts
GWWA21-10320Courtesy of AUDI OF AMERICA, LLC