So I have been getting a 0420 and a 0300 and its been running like ****. I've redon this engine once and done the head gaskets another times years ago. So I figured maybe it was a bad wire or plug. Replaced em and while I was under the hood I just cleaned the throttle body and MAF sensor. Put it all back together and noticed when trying to plug the TB back in (which is the long style plug that has plastic clip that pulls it on as you push down) Well the fins of plastic that ride inside of that clip broke off so i took the clip part completely out and just slide it on and zip tied it best i could.as far asi could tell it was on alll the way i dont know. But I got everything back together and not only do I have the two existing codes I have 8.... EIGHT more!!!! now I'm sitting here yall like wtf. So I'm here today on your beloved forums to get some answers!! lol
New codes are:
p0300
p1516
p0220
p0120
p2125
p2120
p1125
p0420
p0128
u0107

Thanks yall