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Home >> Audi >> 2021 >> TT Quattro S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Exhaust System, Emission Controls (Servicing - 5-Cylinder 2.5L TFSI Engine (Ea 855 EVO)) [Coupe]) >> 26 Exhaust System, Emission Controls >> Emissions Control System >> Catalytic Converter, Removing And Installing >> Installing

Catalytic Converter, Removing And Installing: Installing

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

Install in reverse order of removal and note the following.

-- Bring the catalytic converter and screw-type clamp -3- into the installation position but do not tighten yet.

GWWA26-11879Courtesy of AUDI OF AMERICA, LLC

-- Bring the heat shield -1- for the bevel box into the installation position and tighten the bolts -arrows-.

GWWA26-11834Courtesy of AUDI OF AMERICA, LLC

-- Install the bolt -2- all the way but do not tighten.

-- Install the subframe. Refer to SUBFRAME, LOWERING .

-- Install the driveshaft. Refer to the appropriate service information .

-- Install the bolts -arrows- all the way but do not tighten.

GWWA26-11717Courtesy of AUDI OF AMERICA, LLC

-- Aligning the catalytic converter:

GWWA26-11904Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts -arrows-.

GWWA26-11925Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolt -1-.

-- Tighten the screw-type clamp -2-.

-- Check the adjustment dimension of the catalytic converter.

-- Install the Heated Oxygen Sensor -G39-. Refer to HEATED OXYGEN SENSOR, REMOVING AND INSTALLING .

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

-- Install the subframe. Refer to SUBFRAME, LOWERING .

-- Install the driveshaft. Refer to the appropriate service information .

-- Install the rear catalytic converter or exhaust pipe. Refer to Emissions Control System ; Rear Catalytic Converter/Exhaust Pipe, Removing and Installing.

-- Install the exhaust system without tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .

NOTE:

If the catalytic converter with particulate filter was replaced, the ash load value must be reset using the Vehicle Diagnostic Tester.