check the maf connector, unplug and replug. might want to pull the maf and inspect. check all injen intake hose connections for leakage. do you have an oilable air filter/ is it over oiled?

It looks like one o2 sensor may be bad or have a wiring problem. judging by the codes it doesn't seem too complex a problem or expensive to repair.... unless other codes show up. your orig. post said it had 5 codes.