How can I reset the service soon light or would I have to take it to Mechanic?? on 2002 Saturn L200

I took it to my friend and he connected his computer to it and the coffee got was a 405 if I remember correctly it was a bad Gascony so since then I have replaced the gas cap with a new one

by in La Puente, CA on November 04, 2013
1 answer
ANSWER by on November 04, 2013
You can try disconnecting the battery and waiting about 10 to 15 minutes and reconnect the battery. This should clear the light and reset the computer.