Audi A4 (B9) Forum

728 topics in this forum

1. • 

   c123ef0 - Hydraulic Brake Booster Limit Value Reached

   By alitop14, January 31, 2022
   • • 
   • 6 replies
   • 23.6k views
   • 
   • cliffcoggin
   • July 24, 2024

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3. Crankcase breather pcv valve oil separator

   By Karol3dd, July 22, 2024
   • 0 replies
   • 439 views
   • 
   • Karol3dd
   • July 22, 2024
4. • 

   Knocking noise.

   By Katti, July 21, 2024
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   • 4 replies
   • 1.1k views
   • 
   • Katti
   • July 22, 2024

5. Apple car play

   By Shell71, July 17, 2024
   • 0 replies
   • 584 views
   • 
   • Shell71
   • July 17, 2024
6. • 

   Crankshaft bearings !

   By Bobby87, July 16, 2024
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   • 2 replies
   • 672 views
   • 
   • Magnet
   • July 17, 2024
7. • 

   Rodent/Rabbit attack

   By JohnJohn, July 14, 2024
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   • 2 replies
   • 471 views
   • 
   • Magnet
   • July 14, 2024

9. Audi pre sense malfunction

   By Jamaica876, July 12, 2024
   • 2 replies
   • 918 views
   • 
   • Jamaica876
   • July 13, 2024
10. • 

    Used A4 with long list of services but could be a steal?

    By Jonathan5922, July 6, 2024
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    • 14 replies
    • 1.3k views
    • 
    • Jonathan5922
    • July 12, 2024
11. • 

    Help please

    By Mcgkerry, June 29, 2024   

    • fault
    • stop-start
    • (and 1 more)

      Tagged with:

      • fault
      • stop-start
      • malfunction
    • • 
    • 8 replies
    • 628 views
    • 
    • Magnet
    • July 10, 2024

12. Can anyone help with transmission oil ?

    By Karol3dd, July 9, 2024
    • 0 replies
    • 320 views
    • 
    • Karol3dd
    • July 9, 2024

14. Boot lid opening on its own.

    By Blueit, July 11, 2022
    • 16 replies
    • 12.8k views
    • 
    • Rigger
    • July 5, 2024
15. • 

    Replacement rotary dial for NMI/navigation

    By shed13C, July 1, 2024
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    • 2 replies
    • 309 views
    • 
    • shed13C
    • July 2, 2024

16. 2017 2.0 S Line Diesel - Auto Box - Lag.

    By bantamdave21, July 1, 2024
    • 3 replies
    • 485 views
    • 
    • Stevey Y
    • July 2, 2024

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

    By Doctor786, October 16, 2022
    • 30 replies
    • 55.6k views
    • 
    • Ashaudiq7
    • July 1, 2024
18. • 

    Unknown Rubber plug

    By Peteb1951, June 30, 2024
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    • 2 replies
    • 322 views
    • 
    • Peteb1951
    • June 30, 2024

19. EGR cooler replacement

    By SJOKZ, March 9, 2024
    • 4 replies
    • 4.6k views
    • 
    • Audii
    • June 29, 2024
20. • 

    2017 (B9) A4 Avant 2.0 TDi S-Line Special Edition

    By Rigger, May 30, 2024
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    • 11 replies
    • 1.4k views
    • 
    • Magnet
    • June 25, 2024
21. • 

    Cambelt & waterpump cost?

    By Mrisir, July 11, 2023
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    • 16 replies
    • 8.5k views
    • 
    • Pc759
    • June 24, 2024

22. Audi A4 2017 Engine speed governing.

    By PHB, June 24, 2024
    • 0 replies
    • 190 views
    • 
    • PHB
    • June 24, 2024
23. • 

    A4 rear coil spring

    By texaspete1973, April 21, 2023
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    • 6 replies
    • 2.8k views
    • 
    • Pc759
    • June 24, 2024
24. • 

    Rear suspension bushes

    By RichPow, December 8, 2022
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    • 13 replies
    • 6.7k views
    • 
    • Pc759
    • June 24, 2024
25. • 

    Audi A4 Black Edition - some queries

    By bretty1984, April 1, 2021
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    • 15 replies
    • 8.1k views
    • 
    • mergim c
    • June 22, 2024

26. Audi A4 Avant 3L potential start issues

    By raflus, June 16, 2024
    • 0 replies
    • 225 views
    • 
    • raflus
    • June 16, 2024
27. • 

    Adblu Control Unit for car year/engine size

    By SEAN MG, June 13, 2024
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    • 6 replies
    • 628 views
    • 
    • Stevey Y
    • June 15, 2024
28. • 

    Does Spacesaver fit in the MHEV? 1 2

    By Peteb1951, February 10, 2024
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    • 40 replies
    • 6.2k views
    • 
    • Antec123
    • June 14, 2024