Ok I got into an accident about a month ago and I just recieved my car today. My CEL suddenly pops up and I get a code 01: Primary O2 sensor Open or short in O2 sensor circuit, defective Primary O2 sensor. I know that after the accident my speedometer didn't work but that is fixed now. What could it be? Also just to make sure I am reading the code right, I jump the service connector and the CEL flashes one quick flash correct?

 

why don't you replace the o2 sensor then

 

Thats how you do it. Get an O2 sensor off ebay for like 10 bucks, hopefully it's good.