The problem was a leak from a broken valve going from the dispenser drawer to the water intake. We were surprised other systems were not damaged,since it had been going on for a while but we didn´t notice the water under the washer, it´s in a enclosed space and it all ran to the back of the washer.
The error comes up when the wires get wet enough to fail. Changing the entire hose with the broken valve takes maybe 10 minutes, it´s right under the top panel, just removed the screws on the back of the washer and popped it off.
We didn´t even change the thermistor itself.Once the old wire dried off it worked fine, after we took care of the leak. We kept the new one in case the old one gives up later, but access to that is also super easy, just unscrewing the back panel off. Hardest part of it all maybe was moving the machine!
Try taking a look into the washer before calling a repairman, if you have no warranty benefits anymore. Along with expedited shipping, the cost was under 45 bucks and took no time. With the help of online videos, it might be something you can fix yourself.