The Best My Check Engine Light Is On Why Ideas. This leads to triggering of system sensors, which do notice the loss of fuel, which in turn activates the check engine light. Have your vehicle scanned for trouble codes, have the stored code (s) diagnosed and get the repair quote.

Do not continue driving if your engine is running hot and the check engine light is blinking, as this is a sign your engine may catch fire. Web here are some of the most common reasons your check engine light is on: Loose or faulty gas cap.
