When you see the check engine light on and don’t feel anything awkward, there’s no need to panic. You can keep driving without calling the emergency number right away, as a minor issue will ignite the check engine light as well(actually, for most of the time).But when you see a flashing/blinking check engine light, affected when driving, or feel, smell or see obvious symptoms, you should be cautious. Slow down, pull over, and call for assistance. A blinking check engine light signals serious problems, and you better not take the risk.