Multiple fault codes but no CEL

[remcafee]

take a deep breath and keep it simple stupid, start logically first check you battery and ecu connections and make sure theyre clean and tight and free from corrosion, check for signs of any rodent tracks that they mightbe nibbling on somewires, thats an awful lot of codes at the same time buddy its gotta be somethingbig and simple that youre missing

[Neinris]

Originally Posted by remcafee

take a deep breath and keep it simple stupid, start logically first check you battery and ecu connections and make sure theyre clean and tight and free from corrosion, check for signs of any rodent tracks that they mightbe nibbling on somewires, thats an awful lot of codes at the same time buddy its gotta be somethingbig and simple that youre missing

Thanks! I'll check the ECU connections and battery terminals tomorrow after work. I didn't see any traces of rodent tracks or droppings when I replaced the upstream O2 sensor, and when I had her on the lift when I was replacing the doughnut gasket between the header and midpipe, and also replacing the downstream O2 sensor, so I don't think it's that. And I don't see much rodents roaming around where I live here in San Diego.
I've removed the negative side of the battery multiple times, but not the positive, I didn't really peek behind the red plastic cover. I don't have a CEL and she runs great now after I've made those repairs, probably didn't need to replace the sensors, but definitely the exhaust gaskets. You wouldn't even know that there's something wrong unless you plug the ODBII scanner, which is just something that bothers me.

As previously mentioned in the thread, I went with all Denso parts for the O2 sensors and MAF sensor, from RockAuto, hopefully they're not fake, $220 is not cheap but considering they're Densos, kind of cheap. I don't mind spending that much as long it gets fixed at this point.

I'll keep you all posted.