Audi Repair Questions? Ask a Mechanic for Answers ASAP
There may be internal failure with the valve body. The dealer has certain technical bullitins that adress this particular fault and replace the transmission valve body or transmission control module depending on the information contained on the TSB and the VIN of the vehicle. I recommend going to the dealer for repair as they would have the most up to date and correct repair information. An outside shop can do the work cheaper but the dealer will know the diagnosis right away.