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

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.)