I recently purchased a 2007 dodge charger 3.5L off a small police dept in ontario and it runs great, decent shape except I got codes 0137 and 0138 on my first short Drive. I replaced the problems sensor reset codes and drove it once with no codes. Moved it off the street and codes came back. Ive been looking everywhere for possible situations that could cause a high and low voltage but no bare wires or anything. Cleaned and checked my grounds and those are fine as well. Anybody have any ideas still need an emissions test on this bad boy.