How might epigenetics relate to a car's check engine light and rattling noise?

[NathanS]

My car's check engine light is on and now there's a weird rattling noise

[GraceT]

That sounds serious a check engine light plus rattling isn't something to ignore you should get it scanned soon

[Edward67]

Look if the noise comes from the front stop driving and get it checked right away a loose part could drop or cause a bigger failure

[OliviaUS]

In my experience a rattling can be a loose heat shield or a worn suspension part a quick diagnostic tells you what to fix

[Olivia.G]

Im not sure what this means over text but probably best to get it checked soon even if you just drove it home