I also have no power at all when this happens.I have heard it can be in the throttle body or possibly the brake lite switch not sure how to trouble shoot this?
I have a 2001 volkswagon beetle with a 2.0 .the epc lite comes when i accelerate on 2001 Volkswagen Beetle
You will need to take it to someone that has a factory compatible scan tool. Your average parts store does not have the capabilty to check this system. It could be as simple has haveing the bascic settings reset but a proper scanner is a must. Seek a VW specilty shop might be a good start.
have codes scanned as said in #1 and post codes so we can adv