[V6-12v] Odometer Problem

[Jon Spensko]

I know this is not a V6-12V problem but I trust this group's experience to
make self repairs possible on both of my AUDI's!

My 1988 5000CSQT electronic odometer has started clicking up mileage
at almost 3x normal while the speedometer and trip computor are normal.

Any Ideas on where to start looking?? Bently is worthless on this one!

Thanks to all
Jon Spensko ><))>
1992 100S
1988 5000CSQT Avant