The smart ones have readers/programmers that can turn off certain functions in the PCM... A CEL because if insufficient EGR flow??? No problem, turn that function off...
My beater F-150 came from a private party and has no CEL, guessing it's been removed... It had no sign of being apart recently, maybe the bulb is just burned out(ha ha)...
I went with a dealer buddy to a repo auction a week ago, he bought a 10K mi 2015 Chrysler T&C for $21,200(said $22,100 was his limit), will price it out at around $26K...
There was perfect, 932 mile, 2015 Kia Rio that brought $6800(yes it was automatic)... Bank holding lein wouldn't sell it, we'll see what it does next week...