ALL the Lites On Dashboard Honda 2018 Accord Sedan

OP, do the warning lights in the photo above stay on when the engine is started? It is normal for dash warning lights turn on with key in “on” before starting engine. That’s so the owner can verify the bulb is working. In your photo, the check engine light appears to be on, bottom of display, center. But if key was in “on”, engine not running, like said above, that’s normal, doesn’t indicate engine problem. If CEL remains on after starting engine, that’s not normal.

Another poster here has posted about problems with a newly purchased Accord exhibiting dashboard warning lights for no apparent reason. Looks to be caused by a different problem than yours, but might be worth a read.

Since message says “see dealer”, sensible thing to do at this point seems to take car to dealership shop. The problem appears to be with a safety function that is supposed to prevent the driver from accidentally drifting off the side of the road.