The Best 2004 Hyundai Sonata Check Engine Light Came On Ideas. The most simple problem that can cause your check engine light to come on is an unsecured gas cap, so make sure you check that first! 6 reasons why the check engine light may come on.
It can be alarming seeing an engine warning appear on your dashboard, especially if you've never seen it before. Likewise, the check engine light could also be a warning of a serious problem that could cause serious damage to your engine and come with a hefty repair bill. Web the video above shows how to locate the on board diagnostics obd plug location on your 2004 sonata, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your sonata.
