Yesterday me and my friend installed my dc header for my 00 accord and today i was driving and my check engine light came on. The only sensor we obviosly moved was the o2. So i'm guessing it went bad. I'm going to try to disconnect my battery and try to reset the computer to see if that fixes it, i doubt it but its worth a try. i only have 58k on my car now, i cant see how an o2 sensor could go bad. Any suggestions?

 

if you pull the code first, you could make sure its the O2 sensor.....did you plug both of them back in?

 

yes plugged both back in.....worked fine all yesterday and this morning going to work..until today when i went out to lunch lol. I'll get my friend to check the code before i buy anything.