Bank1 and bank2 lean fuel mixture on 2003 Ford windstar what is going on

Question

071 and

071 and
072 code

Answer 1

P0171 Fuel trim system lean bank 1

P0172 Fuel trim system too rich bank 1

Are these the code you have? Because if they are it only obviuos you have a ruptured vacuum line to the fuel pressure regulator, you need to inspect that vacuum hose,