The engine computer is programmed to alert us when the engine has created a code which "it" wants someone to check out. A technician will connect a computer to the engine computer and, commonly, will read what that code is. Codes warnings can include that your gas cap is loose to, your engine fell out. It is good to have it checked.
definitely check sensors could be faulty but then pull up to a autozone or orielly s and have them do a free check and you should know if its a sensor or if u need to take it in
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