My engine light keeps coming on amd a sign saying epc then car is stalls

What is your question?

My engine light keeps coming on amd a sign saying epc then car is loosing power asif no petrol supply or fuel lines arnt supplying petrol to car it hesistated to go

What makes this problem better or worse?

When im in low revs

How long has your 2009 Audi A4 Quattro had this problem?

Just started