Question : have some dtc codes i need some help with

[Jeremy90]

p0004 fuel regulator control high
p0420 catalyst system below threshold
p0440 evap emissions control system error
p1200 injector control circuit
p2004 intake manifold runner control stuck open bank 1


any help on what these mean and how i could possibly fix them? these have me horribly stumped so any help is appreciated

these are all obd2 by them way off my 97 chevy lumina base with a 3100 sfi