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The engine light is not specific to any one thing. It is only meant to inform the driver that there is a problem with engine management / emissions control.
This light comes on when the car's engine management system senses an emissions impacting fault. This has nothing to do with oil service, coolant level, or any regular maintenance items. This light is caused a failed component or operating range out of spec. There is a problem with the engine / engine management / emission control systems or one of the inputs that it uses to operate properly / efficiently. There are about 200 individual faults that can trigger this nonspecific light.
it can be as simple as one failed spark plug or a loose gas cap. It can be as serious as a catalytic converter failure or complete engine failure.
there is no reason to suspect the cat, unless there are faults logged pointing to it. a low mileage car is not more likely to have a cat issue than a high mileage car.
so, the upshoot of all this is that you will need to have the faults read and proper diagnostics steps taken based on the stored faults.
Sorry if you were hoping for a different answer, please don't shoot the messenger - I can only give the honest answer, which I have. Please remember that a low rating PUNISHES me for my honest and prompt response, and I receive nothing for my time and answer until a positive rating is clicked.Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.