P0158

[volp]

Hey guys I threw this code last night. I read through a couple posts and found that this is the o2 sensor after the cat. It doesn't matter which one because from my understanding they both go around the same time so I will replace both. My question is, how do I replace them? The parts alone are gonna be around $200 so I don't want to blow any more money on install. Does anyone have step by step instructions for them? Also if I drive around with this for a little while is it going to do any harm?