Did a google search, found a you tube video on the repair, ordered the part and was done in less than 30 minutes. I had installed a long flexable supply line when I did the original install (12 months and 3 days prior). 3 days out of warranty. Anyhow everything I found pointed to the ECS thermosistor as the problem.
Would recommend having a very long needle nose pliers or those clamps doctors use (you can pick them up at hardware store. Made unlocking the sensor from the housing easier.