No, not tooo much to tell. Need to get the trouble code read out and go from there. You should know that you can't forget to put the gas cap back on when you're through fuelling or not to leave the engine run when you're fuelling, these will set codes do to the engine control unit sensing a "major purge leak". You could have a purge leak problem anyways, even without forgetting these steps, all OBD II cars are very sensitive to this. A few other common problems are oxygen sensors and mass airflow sensors. But this is all speculation and crystal ball reading. You need to start by getting the codes read......Gilly