Not a helpful answer but I gotta rant since it just happened yesterday. The spouse was driving halfway across the state when all hell broke loose on their 2018 Honda crv. In the interest of time I won't do the complete laundry list of error and warning messages, but it was just about every major system and safety feature, from tpms, brake failure, collision avoidance, cruise, lane departure, coolant temp, and something about the moonroof. There were a total of 14 warning messages and 6 dash icons. They called me in a bit of a panic, so I, thinking electrical issue, found a dealership near the route and gave directions.

Four hours later, I got a call with an update: the "check engine" light was triggered by a detected misfire in one cylinder. "so what caused the cavalcade of calamity then?" I asked.

"Oh, that is just what the car does when the check engine light comes on," replied the service writer. "it does that to make sure you notice the check engine light."

You gotta be shitting me.

We didn't have the $1,500 for the fix for the fuel injector problem that caused the obd to trigger in the first place, so an oil change later, the codes were cleared and so were all the errors and warnings.

What the fuck.