Finished up a dishwasher repair job last night. Took me a few weeks to figure out, but was able to do it on my own. Samsung dishwasher was leaking water that ended up being a bad seal that rusted out the ciruculation pump motor, plus a little check valve had worn out. Set off an alert that wouldn't let it run. Trying to find replacement parts was a bear and I ended up having to order (and return) 3 replacement motors due to them arriving broken. Best part about it is that I was able to complete the job for under what it would have taken for even a service call to look at it, persistence pays off.
Long story short, if you have issues with a Samsung Dishwasher, I might be able to help you out.