The Best What Makes The Check Engine Light Flash Ideas. Web a flashing check engine light when the engine is off is caused by an incomplete emissions monitoring test. However, many things can cause a misfire, so the best way to pinpoint the cause of your blinking check engine light is to connect your car to a diagnostic scanner to check for trouble codes.
However, many things can cause a misfire, so the best way to pinpoint the cause of your blinking check engine light is to connect your car to a diagnostic scanner to check for trouble codes. A bad spark plug can cause misfiring, damaging internal engine parts, and can cause the check engine light to flash. Replacing the catalytic converter might make.
