Jeepking88

Hey guys (and girls), first post, awesome forum you got here!
I recently had my trans rebuilt and when I got it back in my o2 sensor went bad (bank 1 sensor 1) so I replaced it, and my plugs and wires. I didn't think nothing of the o2 sensor, when I had the exhaust out for the trans I pulled them and one fell in some oil (not a lot but it got on the sensor shell) I figured this ruined it.
Anyways after I replaced it I now get check engine light flashing for p0332 p0308 and p0200. The truck shudders like a dead cylinder or two. I'm guessing injector? Any input is greatly appreciated, I tried the search but to no avail.
P.s. My knock sensor code was up before, I'm saving for another motor to go in this summer and didn't want to address the k/s yet but plan to now.