Can you explain a p0457/p0204/p0304 in the same time on a 4.0 L 6cyl awd Chrysler?

Question

Can you explain a lighting for capgas/p0457/p0204/p0304 in the same time on a 4.0 L 6cyl awd Chrysler?

Answer 1

P0457 EVAP system - Loose gas cap

P0204 Injector # 4 open

P0304 Misfire # 4 cylinder

For P0457 check the fuel cap this means missing or propely installed. The misfire is cause because the injector is not giving fuel to that  cylinder. Replace the number 4 injector.