Right extruder won't get hot

After a long break of using the Zeepro on Zeeproshare I decided over the weekend to switch over to octoprint. Had somebody solder a new USB, and life seemed good. Tried using the right extruder (which was always the better one it seemed under the ZeeProShare setup). The temperature reading never gets much above 120, and on two occasions it shut down due to thermal overheating issues.

I tried doing Autotune on it figuring it might be that, but once again it won’t heat. Any ideas of what might be happening? Can a thermistor go bad? I tried re-seating all of the connectors with no change in behavior. The left extruder heats better, but I’d like to M303 Autotune it, but due to the right extruder not working it doesn’t autotune.

Any ideas?