Anything that is OTC is junk,made by SPX and they screw people also not standing behind their equipment.They did it to my father's side of the family,denied my Grandma Rose retirement money from my grandfather whom passed away about 39 years ago,my father's dad because he did not work there for 20 years yet.He worked at SPX for 19 and a half years,died of a heart attack at age 39 and my grandma Rose recieved his 20 year pin.Some you cannot read with an aftermarket scan tool and Chrysler is one,1997 and down.They have to be read with the DRB III.The factory scan tools do the best job if you want to spend the money.