2004 Audi A6 P0706 and P0507 Error: PRND Blinking, Reverse Gear Failure - Transmission Issues at 133K Miles

Model: 2004 Audi A6 Fault Code: P0507 Posted: 2016-02-24 00:23

The check engine light has activated on my 2004 Audi A6 3.0L model, with diagnosed trouble codes P0706 and P0507. The PRND indicator on the dashboard is blinking, and reverse gear does not engage properly. I recently purchased this used vehicle with 133,000 miles. The shifting behavior appears abnormal—gears do not shift as expected. Does this indicate a failing transmission? What are the possible causes and repair options for these specific codes in a 2004 Audi A6?