Toyota Repair: 2005 Toyota camry trac off , vsc , service engine lights, 2005 toyota camry, toyota camry

Question
The trac off,VSC, and Service engine lights came on at once. I took it to the local Auto Zone and had it scanned and the results read the following  EVAP Emissions Control Leak (small). I don't remember what the code was. Anyway they erased the code and the lights went out but have since came back on. Is this problem causing all 3 lights to come on? Any suggestions on how to fix it myself or about how much would it be at the dealer? The car has 54000 miles on it and could it possibly still be covered by the warranty? Any help would be greatly appreciated.  
Thank you very much
Best Regards,
TJ

Answer
The trac and vsv come on because the check engine light is on.
These systems, TRAC VSC, rely on the engine computer running properly. So when theres an engine code, they shut down also as a precaution.

The very small leak code could be a vsv, a leak or as simple as a loose gas cap.

I would need the code to diagnose further.
Mike