The "check engine" light is connected to the "On Board diagnostics" (OBD) system which detects problems with the emissions of your vehicle. It might be that your gas cap is loose. One time I had a driving student push the gas pedal quite hard while the vehicle was in neutral. This caused the light to stay on for about a day or so before the system reset itself. If the light stays on have a mechanic check it out at your convenience, if it turns off then you have nothing to worry about.
Happy, Safe driving!
〉 Answered on Feb 13th, 2013 by Colleen McGee, Driving Instructor at Americas Driving School
Mataline, there are hundreds of reasons for the check engine light. Some are as simple as a loose gas cap while others are very serious with the potential to negatively impact fuel economy and safety. It's best to have it diagnosed and repaired as soon as possible. You can do it yourself with consumer products such as the CarMD Vehicle Health System or have it looked at by a qualified mechanic. The most common reason for a check engine light is a faulty oxygen sensor, which can negatively impact MPG by up to 40%. You can also get a reliability score and common reasons for your vehicle's check engine light at www.carmd.com/scorecard.
Kristin Brocoff, CarMD, www.carmd.com
〉 Answered on Feb 13th, 2013 by Kristin Brocoff, Director of Corporate Communications at CarMD.com