cel is buggin me out

[projectzoom]

i just got my liscence back today after having it suspended for a month so i was drivin my speed all over the place. i went to a show in philly and on my way home on 95 goin about 70 my check engine light came on out of no where. i have the greddy profec b spec 2 ebc but i was in low boost (stock boost). i have no idea why this happened and im buggin out.
any suggestions on what it could be? im kinda hesitant to take it to the dealer with the boost controller on cuz they will say it is due to that and i dont know if it is or not. i dont know.

 

[JCell]

just reset the ecu, unplug battery for 2 minutes...done
chances r if u take it to the dealer they will blow it off, say the usual "it's normal" and charge u to reset it themselves

 

[DragonSpeed]

Make sure you turn the gas cap until you hear at least 40 clicks(lol2)

 

[dominoy2k1]

dont reset the ecu, get the code read first and go from there.

 

[ATLskate]

Go to Autozone, they check CEL codes for free.

 

[projectzoom]

i went to autozone and had the code read and it is the #1 o2. the only thing that i could think that happened was that my a/f gauge came loose and that is what is causing the cel. i dont think that my the sensor would go bad after one year. im going to check it out on friday im at work until late tonight and tomarrow. what do you guys think?

 

[orangezoom]

If you let the car sit for a month the gas might have lost some of its octane.
The only time I have every thrown a cell was because of low octane some station gave me.
Same code also

 

[projectzoom]

yeah but i reset my ecu and the cel came back on