so I count these:
koeo
551 - iac circuit failure
stored
122 - tps circuit below minimum
157 - mafs circuit below minimum
158 - mafs circuit above maximum
176 - left bank lean
542 - secondary fuel pump circuit failure
543 - secondary fuel pump circuit failure
the fact that its complaining about iac, tps, and mafs voltages suggests that there is a wiring problem, since all of those are on the same circuit - I would carefully check connectors and wiring for those.
left bank lean is usually a 02 sensor issue, but can be a bad injector or a vacuum leak too. your symptom of the cel on for a while then off again is common for a bad 02 sensor, so that is a serious suspect.
the fuel pump stuff is junk and should be disregarded.
I would reset codes, and drive it a day or two, and see if you get the same codes or if some of them are old.