Dishwasher keeps running

I have seen this several times, and all of the times it has a bad control board. usually if you take the control board out, you can see a visibly burnt spot on the back of it wher a connection has melted. Another possible slowrun time problem could be that the water coming into the dishwasher when it fills is not hot. If it isnt hot, it takes the dishwasher longer to heat the water to temp, and therfore it runs longer. Is the water coming out of your tap reasonably hot? if not you may need to turn up your water heater settings. But if nobody has messed with the water heater, or the tap where the dishwasher is attached and the problem just started then thats probably not it. Good Luck!

My dishwasher counts down to 1 minute and is stuck there. If I open the door it starts back at 30 minutes and does it over again.

My Bosch dishwasher had a faulty (undoubtedly from the Siemens factory) solder joint on the load connections of the heater relay in the timer. I cleaned and properly soldered the connections and its worked fine since. (this requires disassembly of the timer assembly). Also noted that additional cycles of more expensive models appear to just be a matter of changing programming jumper on timer.