An illuminated check engine light signals a potential problem within a vehicle’s engine or emission control system. This signal can range from a minor issue like a loose gas cap to a more serious malfunction such as a failing catalytic converter. A blinking light typically indicates a severe problem requiring immediate attention.
Addressing the underlying cause of an illuminated check engine light is crucial for maintaining vehicle health, fuel efficiency, and preventing further, potentially costlier damage. Ignoring the warning can lead to decreased performance, increased emissions, and even catastrophic engine failure in certain cases. Modern onboard diagnostics have evolved significantly over time, providing more specific information than earlier systems, enabling quicker and more accurate diagnoses.
