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in my DTC book p0200 is a Injector circuit malfunction and p0300 is a Random/Multiple Cylinder misfire so I would check wiring for both and maybe change plugs an wires I think you have broke wire that is shorting out so I would try to clear the codes either with a code reader or by disconnecting the battery for like 15 min and see if/how long it takes to code again after you get the injector wiring checked
multiple code issue (evaporative, catalyst efficiency, and miss fire)doubtfull all 1 source of error but draw attention to the miss fire code PO300 is a random cylinder miss fire, possible crank position or cam position sensors.but i would check timing first.
po200 is a injector circuit issue. the 300 is most likely related to it.. There is a good chance you have a PCM issue that needs to be looked at. No way to tell whats going on without diagnosing . This will leave you stranded if you don't deal with it soon