volcano

theres a way to get the codes from an obd1 system with a jumper wire but you have to know which terminals to use. the ses light will flash indicating the code numbers...the number of times it flashes that is.
if its running fine i wouldnt worry about it. you can try disconnecting the battery or pulling the ecm fuse for a few minutes. that will delete the stored codes. but if it comes back theres usually a problem. but like said if its running fine dont worry about it.