My yellow “check engine” light comes on—what does that mean?
When a yellow “Check Engine” or “Service Engine Soon” light comes on, you should make an appointment to have your vehicle checked. What that light means is that the computer is sensing a problem. It could be very minor such as a sensor out of range or it could be that a sensor needs to be replaced. If you would ever have a red light come on, that means your car needs immediate attention and you should shut the car off and have it looked at right away.
