Couple codes coming on need advice on 1999

[deviantQ]

Hi I am on here every once in a while...for the most part my 99 is great. Just replaced the coils about a year ago and she has been great! Have two codes I cleared twice and comes back in a few days. They are :
P0153 Front O2 Sensor, Bank 2 Response Monitoring
P0330 Knock Sensor, Bank 2

I am hoping it is just something loose under there (wiring). I have been idling the car a lot this winter getting it warm for my wife. I was thinking maybe that got the o2 sensor cruddy but who knows.

Has anyone had experience with these codes before I crawl under there and start replacing stuff?

[Q45-pj]

I had in bank 1/2, and also the p0330 along with a few more codes. I swamped out all 4 o2 sensors and the only code that came back was p1320. Which I was expecting. Please keep in mind I'm NO mechanic and have little to no mechanical inclination. In fact I didn't even do the sensors myself. But I know it worked for me. I hope it does for you