What is what does it mean when a check engine light flashes?

A flashing check engine light is a serious warning and indicates a severe problem that needs immediate attention. It typically signifies a misfire that can quickly damage your catalytic converter.

Here's what a flashing check engine light generally means:

• Severe Engine Misfire: This is the most common cause. A misfire occurs when one or more cylinders aren't firing properly, causing unburned fuel to enter the exhaust system.

• Catalytic Converter Damage: Unburned fuel from a misfire can overheat and severely damage the catalytic%20converter. Replacing a catalytic converter is expensive, so addressing the misfire promptly is crucial.

• Other Potential Issues: While less common, a flashing light can also point to severe issues with the fuel system, ignition system, or other critical engine components.

What to Do:

• Stop Driving (If Safe): If the light starts flashing, safely pull over to the side of the road as soon as possible. Continuing to drive can exacerbate the problem and lead to more expensive repairs.

• Avoid High Speeds/Loads: If you absolutely must drive the vehicle, do so at low speeds and avoid heavy acceleration or carrying heavy loads.

• Get it Diagnosed Immediately: Take your car to a qualified mechanic or repair shop as soon as possible to have the cause of the flashing light diagnosed and repaired. A mechanic will typically use an OBD-II%20scanner to read the trouble codes and pinpoint the problem.