P0404 code and puking

P0404 is a EGR circuit code You most likely have an exhaust or intake leak which is why it's running rich Check the engine bay for soot or oil

P0404 = Exhaust Gas Recirculation Open Position Performance Sets when the difference between the desired EGR position and the actual EGR

p0404 EGR code P0404 · When Monitored: Engine running · Set Condition: The EGR flow or valve movement is not what is expected A rationality error

p0404 A P0404 code indicates a potential issue with the exhaust gas recirculation system in a vehicle It means that the EGR valve is not