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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> 3.0L - Exhaust System, Emission Controls - Engine Code(S): CATA >> 26 Exhaust System, Emission Controls >> Removal And Installation >> SCR Catalytic Converter

SCR Catalytic Converter

Removing 

-- On a vehicle with air suspension, activate vehicle lift mode. Refer to the appropriate service information .

-- Disconnect the exhaust system at the clamping sleeve -arrows-.

Fig 1: Disconnecting Exhaust System At Clamping Sleeve -Arrows-
GWWA26-10744Courtesy of AUDI OF AMERICA, LLC

-- Remove NOX sensor 2 -G687- -3-.

-- Disconnect the connector -5-.

Fig 2: Disconnecting Connector -5-
GWWA26-10745Courtesy of AUDI OF AMERICA, LLC

-- Loosen the clamp -arrow- and remove the reducing agent injector -N474-.

-- Move the nuts -1- and bolts -2- and -4- and remove the SCR catalytic converter.

Installing 

Install in reverse order of removal. Note the following:

-- Install the reducing agent injector. Refer to Reducing Agent Injector -N474- .

-- Install the NOx sensor 2. Refer to Removal and Installation .

-- On a vehicle with air suspension, deactivate vehicle lift mode. Refer to the appropriate service information .