what causes dtc po602
 

99 dodge 24v cummins i checked my codes engine light came on checked dtc codes and got po122,p1693,po602 i allready knew about the po122 throttle sensor on order but causes po602

If I remember correctly the 0602 is set by a smarty sometimes, do you have a smarty?

i stacked it with my edge just to try it out buddy selling one but i think bigger injectors are a safer way to get more power