Overview - Emissions Control System

Fig 1: Exploded View Of Emissions Control System

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Particulate Filter Differential Pressure Sensor -G1037-
   • Refer to Overview - Brackets and Pipes for the Particulate Filter Differential Pressure Sensor  .
   • Refer to PARTICULATE FILTER DIFFERENTIAL PRESSURE SENSOR G1037, REMOVING AND INSTALLING  .
2. Bolt
   • 9 Nm
3. Bolt
   • 9 Nm
4. Union Nut
   • 45 Nm
5. Union Nut
   • 45 Nm
6. Oxygen Sensor 1 after Catalytic Converter -GX7-
   • With Oxygen Sensor After Catalytic Converter -G130-
   • With Heater For Oxygen Sensor 1 after Catalytic Converter -Z30-
   • Refer to OVERVIEW - HEATED OXYGEN SENSOR .
   • Refer to OXYGEN SENSOR 1 AFTER CATALYTIC CONVERTER GX7, REMOVING AND INSTALLING .
7. Nut/Bolt
   • Tightening specification and sequence. Refer to Fig 2.
8. Gasoline Particulate Filter
   • Cannot be replaced separately
   • Refer to Catalytic Converter, Removing and Installing  .
9. Exhaust Gas Temperature Sensor 4 -G648-
   • Refer to Overview - Exhaust Temperature Regulation  .
   • Refer to EXHAUST GAS TEMPERATURE SENSOR, REMOVING AND INSTALLING, AWD , EXHAUST GAS TEMPERATURE SENSOR, REMOVING AND INSTALLING, FWD  .
10. Clamping Sleeve
    • Refer to Clamping Sleeve Installation Position  .
11. Connection
12. Connection
13. Bolt
    • 20 Nm
14. Catalytic Converter Bracket
    • Refer to FRONT CATALYTIC CONVERTER/EXHAUST PIPE BRACKET, REMOVING AND INSTALLING  .
15. Exhaust Gas Temperature Sensor 3 -G495-
    • Refer to Overview - Exhaust Temperature Regulation  .
    • Refer to EXHAUST GAS TEMPERATURE SENSOR, REMOVING AND INSTALLING, AWD , EXHAUST GAS TEMPERATURE SENSOR, REMOVING AND INSTALLING, FWD  .
16. Bolt
    • 20 Nm
    • Depending on the equipment/version
    • Quantity: 2
17. Bracket
    • Depending on the equipment/version
18. Catalytic Converter
    • Refer to Catalytic Converter, Removing and Installing  .
19. Turbocharger
    • Refer to Turbocharger, Removing and Installing .
20. Clamp
    • Replace after removing
    • Tightening specification and sequence. Refer to Fig 2.
21. Seal
    • Replace after removing

Catalytic Converter - Tightening Specification and Sequence

Fig 2: Catalytic Converter Tightening Sequence

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.