Flashing CEL after cold start

[SVXalter]

Hello all. It was -18 degrees out today when I tried to remotely start my 96 L. It wanted to go but sputtered and failed about 3 times. So I went outside to start it with the key and had to give it some gas for about the first 15-30 seconds to keep it going. After that it was able to stay running on its own, so I let it run for about 10-15 minutes and went back outside. I found a flashing Check Engine Light waiting for me.

Some background info:
I have about a quarter tank of gas (which usually means at least 6 gallons)
I have had O2 sensor #3 codes about 3 or 4 times in the past 3 or 4 thousand miles.
I also have a bad front passenger side wheel bearing which started making noise about 2-3 weeks ago.

Its supposed to get to -30 degrees tonight so I don't really want to go outside to pull the codes, but I thought I would get a jump on it if anyone here had some thoughts. Thank you in advance.