I have an error code E4 on my diplomat dishwasher, what does this mean?

I have an error code E4 on my diplomat dishwasher, what does this mean?
corinne jones, December 2005


done
the temperature monitoring system may have failed.Try switching the d/w off, switch it back on and restart a washing program

jon celtic, January 2006
link Click here to see other fixes for Diplomat.