Hey, Just to give you a tip on how to clear codes as i have a 94, according to the manual codes can be cleared by disconnecting the positive terminal from your battery for about a minute. This may also delete the service engine soon scenario for a bit but it may come back. If your car runs alright and you checked alll cannister connections , dont worry be happy,unfortunately if the light persists it may interfere with other incoming codes sent.Sign maybe that ecm is going> Ciao!