Once every few weeks my 06 TJ goes into limp mode. It just started doing it a few months ago. I can see the P0340 / P0344 codes. Anyway to tell if it has the original OPDA or sensor? I visually checked the wires going to the sensor and they seem fine. I also disconnected the sensor and probed the harness with the car on (not running) and saw 5v on both the 5v and signal sides of the plug even while moving the wires around. So, the connection seems fine at the harnesss. Should I probe the PCM and check continuity back to the harness? Try a NAPA Echlin CSS1159 sensor? The OPDA is not making any noises, so I assume it is good. It starts right up everytime. Every time it has went into limp mode it was just driving around town, so it doesn't happen when has been sitting and is cold. It is cold in SC now, but I would think it would go into limp mode on start up if cold was the problem. It will run fine as long as it was below 2500rpm. With it not happening all the time it doesn't seem very easy it diagnose, so I am trying to figure out things to test.
Side note, I have a small ODB2 scanner that I use to read codes and values through Torque on my phone. Never had an issue with it on my GM cars, but on the Jeep it will not clear the codes. It reads the codes and displays all the different values fine. Anyone ever see that or what cheap scanner do you use?
Side note, I have a small ODB2 scanner that I use to read codes and values through Torque on my phone. Never had an issue with it on my GM cars, but on the Jeep it will not clear the codes. It reads the codes and displays all the different values fine. Anyone ever see that or what cheap scanner do you use?
