A flashing malfunction indicator lamp (MIL), commonly referred to as a check engine light, signifies a severe engine misfire. This condition indicates that unburned fuel is being dumped into the exhaust system. Such an event can rapidly overheat the catalytic converter, potentially causing significant and costly damage.
The presence of a blinking warning light should not be ignored. Continued operation of the vehicle under these circumstances can lead to extensive harm to emission control components, affecting vehicle performance and increasing repair expenses. Historically, the illumination of the check engine light merely suggested a sensor or system issue; however, a flashing indication signals an immediate and critical problem.