Hi all Need some help I have a A4 Avant b7 2006 2.0tfsi I have a code on my dash and I can't seem to find anything anywhere about it Where my mileage should be displayed it has a code L3 3-4 plug my reader in and no fault stored car runs and drives fine And idea or advice would be very appreciated

There's definitely not much out there on the web. I have found these two links: 

https://www.audizine.com/forum/showthread.php/807361-Odometer-reads-L3-4-5-and-no-milage-reading-Anyone-ever-see-this-before

https://www.700r4transmissionhq.com/audi-a4-speedometer-not-working/ 

But my advice would be that this could be a dealer job to repair. 

Hi try a company called ECU Testing they do repairs on dash pods and will probably know what the problem is.

Steve.