My wife drives a 2017 Audi A3. We just bought it a few months ago. Recently the engine light came on and it was throwing two codes:
P2681
P0230

At that time the battery was also extremely weak (previous owner never filled the water). So I replaced the battery a couple weeks ago and everything seemed to be running fine. No engine lights were on.

Then yesterday, the EPC warning light came on and it threw the following codes:
P2681
P0230
U0615
P00B7
U0615
P00B7
U0615
P00B7

(Don't know why it threw the last two codes 3 times.)

It has low power now. I can still slowly accelerate, but takes a while to get up to speed.

The car has just under 46,000 miles on it.

Is it possible that the fuel pump issue or the engine coolant bypass valve issue are causing the EPC or is it something totally unrelated and I actually have 3 issues I need to take care of?

Thank you so much for your help. Truly appreciated.