What does a continuously illuminated check engine light typically indicate?

A continuously illuminated check engine light is a significant indicator that a serious engine problem needs attention. When the check engine light is on without blinking, it generally signals that the engine's computer has detected an issue that could potentially affect the vehicle's performance, emissions, or fuel efficiency. This could be related to various problems, such as issues with the engine's sensors, the fuel system, ignition system, or exhaust, among others.

Addressing this warning promptly is crucial. Ignoring the light may lead to more severe engine problems or costly repairs down the line. While other maintenance indicators exist, a consistently lit check engine light specifically points to underlying engine complications that require diagnosis and intervention to ensure the vehicle operates effectively and safely.