mynameisneo

We did an oil change to my car and the check engine light came on immediately after 45 seconds of driving. We checked to ensure that everythign was tight, no oil leaking and everything was plugged in correctly. I drove the car, the car VTEC'd, and all the power and functionality of the car was there. I reset the battery and the check engine light went away. Any ideas what may have caused it?
I'm not worried about it, but wonder what may have triggered it.

Thanks in advance.