Posted on 9/26/2025

Your check engine light is one of the most important indicators on your dashboard. When it’s solid, it usually points to an issue that needs attention soon. But when the light is flashing, it’s a whole different story. A flashing check engine light often signals a severe problem that requires immediate attention. Ignoring it or continuing to drive can lead to serious engine damage and costly repairs. Knowing what causes the light to flash and what steps to take can help protect your engine and your wallet. The Most Common Cause: Engine Misfire A flashing check engine light usually means your engine is misfiring. This happens when one or more cylinders fail to ignite the air-fuel mixture correctly. Misfires are dangerous because they can cause raw fuel to enter the exhaust system. When that unburned fuel reaches the catalytic converter, it can overheat the component and cause it to fail. A failed catalytic converter is expensive to replace and is essenti ... read more