Incredible 2006 Hyundai Sonata Check Engine Light Blinking 2023. Web if the check engine light in your hyundai sonata starts flashing, that means that the problem needs prompt attention and your hyundai should be brought in quickly. Without a scanner, unplug the negative battery cable from the engine and wait a few seconds to restart the check engine light.
Without a scanner, unplug the negative battery cable from the engine and wait a few seconds to restart the check engine light. Loose or damaged gas cap 2. You need to replace the spark plugs to fix this problem.
