I have a 2006 Pacifica and the check engine, ABS and brake lights stay on.

does your scanner read the check engine light or ALL modules? No codes to clear , then of coarse you can't clear them! ain't none there , or you only got a scanner for engine (OBDII).

I have this very same issue!! Four mechanics & repair shops later...still no answers, no codes, nor will it clear. Guess we just keep our fingers crossed we don't actually NEED to be advised of an impeding issue w/any of the aforementioned. (Just give it time - and your battery light will also make an appearance and refuse to leave.)