2001 Audi A6 Help with code P0600
 

I have an 2001 Audi A6 4.2L

My problem I am having is about the acceleration at low speed. When you first start the car, it starts moving very very slow. when i press pedal increases rpm but does not increases the speed. Sometime, it does not even increase the rpm. When the speed is over 20-30 mph, it gets better.

code im getting P0600 has any body fixed this problem?