A blinking malfunction indicator lamp (MIL), commonly referred to as a check engine light, signals a potentially serious issue within a vehicle’s engine management system. Unlike a solid, consistently illuminated light that might indicate a less urgent problem, a flashing light almost always points to an engine misfire severe enough to potentially damage the catalytic converter. This situation necessitates immediate attention to prevent further mechanical complications.
Ignoring a flashing MIL can lead to significant and costly repairs. The catalytic converter, a crucial component for reducing harmful emissions, is particularly vulnerable to damage from unburnt fuel entering the exhaust system during a misfire. Replacement of this part can be an expensive undertaking. Furthermore, continued operation with a severe misfire can exacerbate the underlying issue, leading to damage to pistons, cylinders, and other vital engine components.