Thread: Bosch SHU40 problem

Good day. My Bosch model SHU4022UC dishwasher has recently started misbehaving. All is fine until the rinse cycle begins--unfortunately, it never ends. Dishwasher fills normally and the rinse begins, but the cycle will run forever unless I advance the timer manually. Obviously, I suspect a timer problem, but perhaps someone can suggest other things to check first?

Thanks in advance....