Samsung dishwasher reading normal/smart auto code. After researching code online found out it was the thermomister needed to be replaced or ecs sensor. Ordered part on website. When it arrived I unscrewed right side panel of dishwasher and found old ecs sensor and unscrewed it which was some what hard. Then put gasket from old sensor old to new one as new one will not come with gasket to make it seal. Then screwed New one in place and turned on power to machine, which was really the first step to begin with was turning off power and turned machine on and now working with no problems. Fix should take about 15-20 minutes at most. Hardest part I thought was removing old sensor.