Overview - Emissions Control System, 2.9L Engine

Fig 1: Exploded View Of Emissions Control System, 2.9L Engine

Courtesy of AUDI OF AMERICA, LLC

1. Turbocharger
   • Overview. Refer to OVERVIEW - TURBOCHARGER .
2. Oxygen Sensor 1 Before Catalytic Converter -GX10-
   • Overview. Refer to OVERVIEW - HEATED OXYGEN SENSOR .
3. Seal
   • Always replace after removing.
4. Screw-Type Clamp
   • 7 Nm
   • Always replace after removing.
   • Installation position. Refer to Fig 2.
5. Oxygen Sensor 1 after Catalytic Converter -GX7-
   • Overview. Refer to OXYGEN SENSOR 1 AFTER CATALYTIC CONVERTER -GX7-, REMOVING AND INSTALLING, 3.0L ENGINE, ALL VEHICLES WITH PARTICULATE FILTER, EXCLUDING Q7/Q8 .
6. Catalytic Converter
   • Depending on the emissions standard with particulate filter
   • Identifying feature of the catalytic converter with particulate filter: with exhaust gas temperature sensor and differential pressure sensor
   • Removing and Installing. Refer to CATALYTIC CONVERTER, REMOVING AND INSTALLING .
   • If the catalytic converter with particulate filter was replaced, perform the listed adaptations in the Guided Functions "01 - Engine electronics, functions" or "0001 - Steps after replacing component" using the Vehicle Diagnostic Tester.

Installation Position of the Screw-Type Clamps for Catalytic Converter

Fig 2: Installation Position of the Screw-Type Clamps for Catalytic Converter

Courtesy of AUDI OF AMERICA, LLC

• Angle -α- = 90° ± 15°.