Is it the car or am I paranoid???

[violametallic-S-]

I have an 01 S with 30k I recently got a check engine light. I scanned it with my scanner and it appears to be a "02 sensor circuit slow response bank 2 sensor 1" P0153. I deleted it and it hasnt come on for the past two days.

I dont know if its me but I think i noticed it not performing like it used to, some minor hesitiation and what not. Now i dont know if im paranoid and im playing mind games with myself or could it be that hte sensor is actually kaput but the computer wont read it?

Can anyone share some info?

Thanks