New LS1 Owners - Newbie Tech - Battery died now P0134

I accidently kicked on my fan switch when I went into work Saturday and then when I came out my battery was dead. I jumped my car and drove it about 20 miles. Then it started up just fine then about 5 miles later I got the SES light. Went to checkers and I got the P0134 code. You guys think they have something in common or two separate events?

I have longtubes with the rear O2's are deleted.

Just remembered I filled up with 87 octane instead of 91 could that be a problem if my car is tuned for 91 octane?

http://www.obd-codes.com/p0134

I dont know, but thats the generic 0134 code link

Hp Tuners says that is a insufficent activity on your bank 1 sensor 1 O2. Did you notice any changes on how it runs, and also how old are these front O2's?

sorry i guess i should of gave more info. I know what the code is and how to fix it. I was just wondering if you guys think the dead battery or the 87 octane could have something to do with the O2 going out. I am going to run out this tank of gas and run 91 again and see if the code comes back.