Famous Random Check Engine Light Ideas. The color of the light may be yellow, orange, amber, or red. Keep in mind that the fault code that caused the light to turn on in the first place is stored in your car’s onboard.

Seeing the check engine light can be unsettling, but there are several steps you can take when it happens: Turn the vehicle on and off three times, a method that, to be clear, only works with certain models. Sensors activate the check engine light when internal problems arise.