Sent from my SM-N9005 using XDA Premium 4 mobile app
Download Androsensor from Google and see which one is failing (There should be 2: battery temp and phone temp and probably third for CPU but that one doesn't show here). If it is battery sensor, I'm not 100% sure but I think it should be inside battery, so I would try if new battery would work, after cleaning all the contacts. Thermistor is a fancy name for calibrated resistor that changes resistance according to temp, if I remember correctly lower resistance = lower temp, looks like a short maybe.
While you at it why not check all sensors, dial *#0*# and look, no temp here, but make sure other things work right.