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LG Dishwasher Making Noise


The part(s) or condition(s) listed below for the symptom Dishwasher making noise are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Dishwasher making noise

Cause 1Wash Impeller

The wash impeller is a small plastic blade that forces water through the spray arms. If one or more of the impeller blades is broken, the dishwasher will make noise. In addition, if the impeller is damaged, warped, or bent, it can scape against the pump housing. Inspect the wash impeller for damage. If the wash impeller is damaged, replace it. On most models, you can replace the wash impeller independently of the pump and motor assembly. Search for your model number to determine if your impeller is replaceable. If the impeller cannot be replaced separately, you will have to replace the entire pump and motor assembly.

Wash Impeller for your LGDishwasher
Wash Impeller - Part # 1268190 Mfg Part # 5911ED3003A
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Cause 2Water Inlet Valve

The water inlet valve opens to allow water to enter the dishwasher. When it is new, the water inlet valve is very quiet during operation. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can produce a loud vibration, buzzing, squealing, or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.

Part Testing
Water Inlet Valve for your LGDishwasher
Water Inlet Valve - Part # 3282910 Mfg Part # 5221DD1001F

Dishwasher water inlet valve. If the dishwasher won't fill properly, then the water valve is likely restricted and will need replacement. If the dishwasher is under filling, it won't clean dishes effectively.

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