Car shows epc light on and lose power,trottle body problem

What is your question?

It lose power and had to start it again and will drive and later the fault comes back,the mechanic tells me to look on wiring on trottle body and accelerator.It says basic settings and adaption needed on trottle body,it was done but still fault comes back.

What makes this problem better or worse?

Worse

How long has your 2006 Audi A3 had this problem?

5 months