2002 Saturn L200 evap emission system malfunction

that code means you have a leak in your fuel system the engine pulls a vaccuum on ur gas tank etc removes all the air when your ecm closes the system off then monitors the amount of leakage it has and if it has a leak then it will flag a code.it could be a simple as a bad gas cap remove your cap and inspect the seal if the seal is cracking then replace it.also could set that code if the cap was loose.also could be a leaking fuel pump oring cracked or leaking line etc.bad fuel tank pressure sensor.its best to have a professionial look at it.hope this helps.
louie