So general question about my 2006 2500 Ram PU with the 5.7 Hemi. 51K miles so it is very low mileage. I keep getting the errors for upper 02 sensor driver side and left turn signal errors. Left turn signal is no big deal because I put LEDs in there. B163C and P0420 codes. I kept clearing those. Finally replaced all 4 of the 02 sensors and Cat converter on driver side. I have had it at Dodge and they cleared it. Then I got a P0700 error which was a transmission error. I took it to a tranny shop they said the tranny was fine and did a regular service on that. They reset the error as well. I have used premium gas which sometimes delays the errors. Sometimes I can go a couple of hundred miles with no problems. Other times maybe 20 miles. After going through this for a few months I went and removed ground wires and redid those under the hood. Cleaned the battery post and cables. Disconnected and reseated some of the module plugs under the hood. Has anyone else gone down this road?