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Home >> Audi >> 2020 >> S4 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Exhaust System, Emission Controls [CYMC,CYRB,CYRC,CWPB,DAXB,DAXC,CJEB,CJED,CJEE,CNCD,CNCE,CUHA,CUJA,CNCB,CUHB,DAYB,CYGA,CYNB,CYPA,CYPB,CYYA,CVJA,DDWA,DJYA,DKWA,DNTA,DKNA,DLHA,DLHB,DMFA,DKWB,DLGA]) >> 26 Exhaust System, Emission Controls >> Secondary Air System >> Overview - Secondary Air System

Overview - Secondary Air System

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2019 Audi A4 allroad, 2019 Audi A4 Quattro, 2018 Audi A4 allroad, 2018 Audi A4 Quattro, and 2017 Audi A4 allroad. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Secondary Air System
GWWA26-12130Courtesy of AUDI OF AMERICA, LLC
  1. Nut
    • 8 Nm
  2. Bolt
    • 9 Nm
  3. Nut
    • 8 Nm
  4. Rubber Bushing
  5. Secondary Air Injection Pump Motor -V101-
  6. Clip
  7. Resonator
  8. Connecting Line
    • From the Secondary Air Injection Pump Motor -V101- to the air filter housing
  9. Bolt
    • 20 Nm
  10. Bolt
    • 9 Nm
  11. Bolt
    • 20 Nm
  12. Hose
  13. Bolt
    • 9 Nm
  14. Double Bolt
    • 9 Nm
  15. Secondary Air Injection Solenoid Valve -N112-
  16. Seal
    • Replace after removing.
  17. Connecting Line
    • From Secondary Air Injection Pump Motor -V101- on the Secondary Air Injection Solenoid Valve -N112-
  18. Bolt
    • 9 Nm
  19. Nut
    • 8 Nm
  20. Secondary Air Injection Sensor 1 -G609-
  21. Double Bolt
    • 10 Nm
  22. Bracket
    • For secondary air injection pump
  23. Clip