What does 'Check Engine Emission Control System' mean?

[Ezra]

Check Engine Emission Control System indicates that there is an issue with the vehicle's exhaust emission system, requiring inspection of the three-way catalytic converter and the tailpipe for any looseness or leaks. When the 'Check Engine' warning appears during normal vehicle operation, the vehicle should be taken to an authorized service center or repair shop where a professional technician can diagnose the problem. After identifying the cause of the fault, appropriate repairs can be made. An engine serves as both a power generation device and can refer to the entire machine including the power unit (such as in aircraft engines). Types of engines include internal combustion engines (e.g., gasoline engines), external combustion engines (e.g., Stirling engines, steam engines), gas turbines (used in racing cars), and electric motors, among others.