Good evening, the code found p2097 is 1/2 O2 sensor rich(downstream- below the catalytic converter). Your previous code is related to the same o2 sensor. I would recommend replcaing the o2 sensor then go from there. If it returns then you will have to start testing the wiring. I would recommend changing the o2 sensor now if you are able to. It is simple to replace and easy to get to. The trip would be a good chance after the repair to see if it returns with the number of miles you would be driving.
It can have an effect on engine performance and fuel economy. So the sooner you replace it the better. I dont believe it will leave you stranded on the road anyway by any means so I wouldnt worry about that if you arent able to replace it right away before the trip. If you need more help or have more questions then let me know and I will help you further.