I recently had my SES light come on. It is code P0442. I personally just can't run with it. O'Reilly's reported to me this code. I was curious if anyone had somewhere else for me to look, or do I just start throwing gas caps and other parts at it. vehicle is a 2002 Conti. It has 135,000 miles on it and this is the only code pulled for the light. I realize the cap isn't expensive at around $20, but if its not the cause then its $20 wasted. I believe the cap to be the original cap. Thanks in advance as we might be becoming dinosaurs in here!