I searched out the problem on you tube university and some people said it was a cold solder joint on the control module board. I decided to replace the module.It was a job most people can do.You would need a torx driver and a small screwdriver. Please search for the video on u tube first. For safety I would cut the power to the dishwasher before starting the job.Keep in mind that if your dishwasher runs for hours there is a problem .....dont let it go.,Before you buy a new one do research. Some of the new ones cant do the same job as the old ones workin properly.