Read Codes in Dash Display
No one so far has insinuated any of the information here is a substitute for trained engineering support. If as a viewer you can't make that distinction it's on you.
To understand the dash codes read the guide for dashcodes. If you want to understand the engine diagnostic codes and have a diagnostic reading device, get the guide for it or reference online guides presented by others here at your own discretion. The links and info is good.
Nothing is a substitute for being educated on a matter, nor is some opinion that we're all incapable of knowing what we're doing because someone thinks they're the smart guy in the room.
Opinions are simply opinions; knowledge is knowledge, use them wisely.




