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Home >> Audi >> 2021 >> SQ8 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (Exhaust System, Emission Controls (4-Cylinder Direct Injection 2.0L 4V TFSI Engine (Ea 888EVO4))) >> 26 Exhaust System, Emission Controls >> Secondary Air System >> Overview - Secondary Air System

Overview - Secondary Air System

WARNING: This page is about a different car, the 2024 Audi Q5 and 2023 Audi Q5. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Secondary Air System
GWWA26-12183Courtesy of AUDI
  1. O-Ring
    • Replace if damaged or leaking
    • coat with engine oil
  2. Secondary Air Injection Sensor 1 -G609-
  3. O-Ring
    • Replace if damaged or leaking
    • coat with engine oil
  4. Resonator
  5. Nut
    • 8 Nm
  6. O-Ring
    • Replace if damaged or leaking
    • coat with engine oil
  7. Bolt
    • 9 Nm
  8. Bolt
    • 9 Nm
  9. Bracket
  10. Seal
    • Replace after removing
  11. Secondary Air Injection Solenoid Valve -N112-
  12. Bolt
    • 9 Nm
  13. Hose
  14. Bolt
    • 20 Nm
  15. Bolt
    • 20 Nm
  16. Pipe
    • For the secondary air injection
  17. Secondary Air Injection Pipe
    • From the air filter housing to the Secondary Air Injection Pump Motor -V101-
  18. O-Ring
    • Replace if damaged or leaking
    • coat with engine oil
  19. Nut
    • 9 Nm
  20. Bolt
    • 9 Nm
  21. Nut
    • 8 Nm
  22. Rubber Bushing
  23. Secondary Air Injection Pump Motor -V101-