Chances are your catalytic converter is at marginal efficiency. The lamp
will probably come back on sooner or later, with the same code.
Since it went out on its own, disconnect the negative battery terminal for
about five seconds to clear the code (presuming you're outside the 8/80
warranty period). If you're still within the warranty period, present the
car to the dealer for service, hopefully while the code is still present in
Message posted using http://www.talkaboutautos.com/group/alt.autos.hyundai /
More information at http://www.talkaboutautos.com/faq.html