Review Of What Happens When Your Check Engine Light Blinks References. Check engine light blinking causes several things can cause a blinking check engine light. Web the check engine light could start flashing if the spark plugs, ignition coils, or seals within the ignition system have failed or are leaking.
Oil can leak into the combustion chamber and prevent the spark needed for detonation, causing a misfire. Driving any further is likely to cause significant engine damage. Web if the light begins flashing, however, it indicates a more serious problem, such as a misfire that can quickly overheat the catalytic converter.
