I work at autozone on the weekends the obd-2 should give you more information then just the purge solinoid if the evap system is the main
code then you can try changing the gas cap the purge solinoid is on the fire wall and the fumes are purged back to the tank it can get stuck
see if you can find it and clean it make sure that the electric is hooked up disconnect the battery (neg) and reset the computer let the car run for a bit as see if your light comes back on.. also carb cleaner works good for cleaning the purge solinoid have someone who knows about the system check it again most autozone people are just kids that are learning ask someone who has the technical background ase certified
and all autozone stores have at least 2

If you have an Autozone or a Advance are any good parts store near you they be able to test it for you and tell you what is wrong and you know what part to replace to get the light off give these websites a try