I suspect that the dealership disabled my check engine light

r/

Location: Michigan

So I bought my car used from a dealership 4 years ago. I recently saw a post about that dealership from a customer saying they found that their check engine light was disabled so it wouldn’t light up. I went through reviews of the dealership and saw a couple more complaints saying the same thing. In the 4 years I’ve had my car, my check engine light has never come on. I haven’t had any major engine issues that I’m aware of either, but I don’t think I’ve ever had a car that went this long without a check engine light at some point. I would like to have it checked and if I find that it’s disabled, I am wondering if there’s anything I can do legally against the dealership? That has to be illegal to disable it right?