What does the message ECO mean on a 2010 Dodge Charger rt?

The ECO message on a 2010 Dodge Charger RT indicates that the vehicle is operating in a fuel-efficient mode, typically when the engine is running on fewer cylinders to save fuel. This feature is part of the vehicle's fuel management system, which helps improve efficiency during light driving conditions. When the ECO light is illuminated, it signals that the system is actively working to enhance fuel economy. If the light remains on or behaves unusually, it may be worth checking for any related issues with the engine or the fuel management system.