Don't wanna confuse the "normal people" with technical gobbledygook. Car dash displays need to be clear of distractions, presenting their information in a concise form that is instantly recognizable at a glance.

https://mechanicbase.com/cars/dashboard-symbols-warning-ligh...

Oh, yeah, we don't do that either.

Prolly has more to do with someone getting paid to read those codes for you.