How can DIY projects diagnose a rattling check engine light on a 2018 sedan?

[Natalie84]

My car's check engine light came on and now it's making a weird rattling noise, I was just driving home from work yesterday and the light popped on, and now there's this metallic rattling sound coming from the front passenger side whenever I go over a bump or accelerate. It's a 2018 sedan with about 80k miles. I'm worried it's something serious with the suspension or maybe a heat shield came loose. I have a basic OBD2 scanner but the code it gave me was super generic. I'm not sure if I should take it to my usual mechanic or just to a dealership for a diagnostic.

[Mila.D]

That sounds serious a check engine light plus a rattling from the front is not something to ignore you should get it scanned soon so you dont regret it later

[Avery.H]

If the noise is from the front it could be a loose heat shield or suspension part a quick diagnostic will tell you what needs fixing

[Ryan4]

In my experience a stubborn generic code usually means more digging is needed dont trust just one reading get a full diagnostic

[OliverS]

Best move is to book an appointment at an shop you trust and avoid driving too far until you know its safe to drive