Audi A4 (B9) Forum

737 topics in this forum

1. • 

   Brake servo restricted 1 2 3 4 26

   By Stevie84, August 4, 2019
   • • 
   • 640 replies
   • 318.1k views
   • 
   • Sid2020
   • February 16

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3. • 

   A4 allroad Retrofit genuine Audi Swivel/Retracting towbar A4 B9 and All-Road

   By Steve Q, April 18, 2022
   • • 
   • 6 replies
   • 8.6k views
   • 
   • Steve Q
   • June 9, 2023
4. • 

   Audi A4 b9 Avant load guard fitting guide

   By Steve Q, April 20, 2022
   • • 
   • 0 replies
   • 3.3k views
   • 
   • Steve Q
   • April 20, 2022

5. Replacement 10 digit code for Audi Connect

   By tankeen86, February 4, 2021
   • 18 replies
   • 84.3k views
   • 
   • Mick B
   • April 1, 2024

6. Adblue fault no restart after 650miles, Error codes P20BC,P20E8 1 2

   By Doctor786, October 16, 2022
   • 30 replies
   • 58.5k views
   • 
   • Ashaudiq7
   • July 1, 2024

7. Compatible SD Card size for MMI

   By smccran, April 2, 2017   

   • sd
   • card
   • (and 2 more)

     Tagged with:

     • sd
     • card
     • memory
     • mmi
   • 5 replies
   • 30.7k views
   • 
   • rockingdoc
   • December 27, 2017
9. • 

   AdBlue tank fault 1 2

   By haggis_, January 18, 2023
   • • 
   • 29 replies
   • 30k views
   • 
   • Pc759
   • July 27, 2024
10. • 

    Fault code P200200 Particulate Trap Bank 1

    By James397, June 16, 2021
    • • 
    • 3 replies
    • 30k views
    • 
    • Stevey Y
    • June 14, 2023

11. tyre replacement AUDI A4 Avant (2019) spare tyre question

    By Steve335, January 3, 2020   

    • audi
    • a4
    • (and 6 more)

      Tagged with:

      • audi
      • a4
      • avant
      • 2019
      • tyres
      • space saver
      • spare tyres
      • sparewheel
    • 24 replies
    • 27.2k views
    • 
    • happyh
    • December 2, 2023

12. SD card missing 1 2

    By Reddizat24, March 8, 2019
    • 32 replies
    • 27.2k views
    • 
    • Mike Samuels
    • December 8, 2021
14. • 

    A4 Air-con not working

    By Cove1974, April 15, 2021
    • • 
    • 10 replies
    • 26.8k views
    • 
    • Karl PM
    • October 24, 2022
15. • 

    Current Build Time 1 2 3 4 7

    By stufos, June 14, 2023
    • • 
    • 154 replies
    • 25.1k views
    • 
    • Delberthot
    • April 9, 2024
16. • 

    2020 on Mild Hybrid, MHEV, Audi A4

    By Sprint, March 25, 2023
    • • 
    • 15 replies
    • 24.7k views
    • 
    • Chris 747
    • July 23, 2023
17. • 

    c123ef0 - Hydraulic Brake Booster Limit Value Reached

    By alitop14, January 31, 2022
    • • 
    • 6 replies
    • 24.7k views
    • 
    • cliffcoggin
    • July 24, 2024
18. • 

    Timing Belt Change A4

    By Crp46, February 25, 2020
    • • 
    • 10 replies
    • 23.5k views
    • 
    • Stevey Y
    • April 7, 2021
19. • 

    Service Schedule

    By Reavley, March 22, 2023
    • • 
    • 13 replies
    • 23k views
    • 
    • Steve Q
    • March 25, 2023
20. • 

    Undercarriage/Underbody Images or Diagrams

    By GiantJay, December 11, 2021
    • • 
    • 5 replies
    • 22.9k views
    • 
    • Stevey Y
    • December 12, 2021
21. • 

    A4 buy or avoid?

    By Saviola, May 1, 2022
    • • 
    • 13 replies
    • 21.4k views
    • 
    • tmb
    • August 31, 2024
22. • 

    Cam belt & water pump replacement

    By Afiac, April 13, 2022   

    • audi a4
    • cambelt
    • (and 1 more)

      Tagged with:

      • audi a4
      • cambelt
      • water pump
    • • 
    • 6 replies
    • 21.1k views
    • 
    • Afiac
    • April 14, 2022
23. • 

    BEST TYRES 1 2

    By Blueit, July 26, 2022
    • • 
    • 27 replies
    • 19.5k views
    • 
    • jdragon
    • August 30, 2022

24. Where my OBD port

    By Nicholas fraser, July 19, 2021   

    • audi
    • a4 b9
    • (and 1 more)

      Tagged with:

      • audi
      • a4 b9
      • help!
    • 11 replies
    • 18.9k views
    • 
    • Nicholas fraser
    • February 24, 2022
25. • 

    Keyless entry

    By Bluephenix, June 17, 2022
    • • 
    • 7 replies
    • 17.6k views
    • 
    • Steve Q
    • June 19, 2022
26. • 

    Audi Undertray

    By Guest itgeek, June 10, 2020   

    • audi a4
    • • 
    • 1 reply
    • 17k views
    • 
    • Steve Q
    • June 11, 2020

27. DPF filter light and Limp mode

    By aakayamy79, February 20, 2022
    • 21 replies
    • 16.9k views
    • 
    • aakayamy79
    • February 21, 2022

28. A4 B9 Avant tyre pressure chart

    By Pepper, January 27, 2021
    • 2 replies
    • 15.8k views
    • 
    • Pepper
    • February 4, 2021