Bosch dishwasher buzzing at bottom - Jenn-Air JDB6510 Built-in Dishwasher

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A vibrating noise indicates that your Bosch dishwasher is not level. Adjust the leveling legs until the dishwasher is level. Use a carpenter's level to assist you with this process. If the floor is uneven or unstable, fix the flooring. Or, place wood shims or a 3/4 inch piece of plywood under the dishwasher.


The motor has a plastic disc connected to it, which can break off if it wears out. You must replace the whole motor since this component is difficult to fix. Check the motor bearings, which can make noise if they get wet. If the bearings are wet, your tub seal is compromised. Pry it out with a crowbar, and install a new one. A squealing noise usually indicates that the heater fan is warped or rusted. Order a new one since you can't usually repair this part.