@Sphinx This is a warning that there's something wrong with the vehicle. The same light might come on, and be a minor problem, or it really could be indicating something that could destroy vital parts.
Reading the code with an appropriate tool, and looking up the result code in a service manual for the vehicle is the proper way to handle it. DON'T simply ignore or reset it -- you might regret later.
@design_RG
Thank you for your reply and your advice!