OBDII Code?

Could be something as simple as a loose fuel cap. My wife didn't tighten the fuel cap one time and I got the same code. A leak test later and $75 out of pocket, no leak found, cap put on tight, and no problem since. Arggh! My suggestion, if the car is running fine otherwise, make sure the cap is on tight, check for a loose hose around the evap canister, and drive for three hot/cold cycles. If light goes off, no prob. If stays on, take to mechanic.