Have model PLDB999AC0 water is not com...

Is the supply turned on and power applied to the dishwasher? Make sure you've turned the angle stop to open the lines and supply the dishwasher with water. If this is a new problem and it had previously been working alright, then you're looking into a problem with the timer or motor. The motor contains a solenoid that activates a gate to allow water to flow into the dishwasher basin. Remove the kick plate and watch the motor as you allow the dishwasher to run it's cycle. You'll see it go up and down and probably hear a loud hollow sonnd when it activates. Also, make sure the motor is running, and if it's bound, try using a screwdriver to jump start the motor. If it starts up, this sometimes fixes the problem, but it may just put off the inevitable replacement.