Bosch dishwasher will not fill up easy solution

Hopefully this will save people a lot of money opened up the dishwasher and found salt all over dishes and cycle had not finished the machine would not fill up had a look for blockage took side off but what had happened after calling out Bosch engineer the large plastic nut under the salt Lid had worked its way loose letting water go into the base of the machine therefore activating the switch to stop the water going into the machine what must have happened is the lid of the salt dispenser must have stuck to the large plastic nut which holds the salt container to the base of the machin and undone it as I unscrewed the lid but not done up as I screwed it back up it cost me 89 quid and I looked a right numpty so just check the nut you wont have a spanner that size use a flat edged screwdriver to tighten. Hope this helps