What does check emissions mean on a Renault scenic megane?

"Check emissions" on a Renault Scenic or Megane typically indicates that the vehicle's emissions control system has detected a problem, which may affect the car's ability to meet environmental standards. This warning can be triggered by various issues, such as a faulty oxygen sensor, catalytic converter problems, or issues with the fuel system. It's important to address this warning promptly, as it can lead to decreased performance and increased fuel consumption. A diagnostic check at a garage is recommended to identify and resolve the underlying issue.