Dishwasher makes loud banging, grinding, or rattling noises during wash or rinse.

Safety first: Disconnect power before reaching into the tank or sump. Beware of sharp objects like broken glass.

• Check for loose items: Inspect the tank for cutlery, glass, or other items that may be hitting wash arms or the tank walls.
• Inspect wash arms: Ensure wash arms are securely mounted and rotate freely without contacting racks or tank surfaces. Replace worn bushings or arms.
• Clean sump and pump inlet: Remove filters and check the sump for debris. Clear any obstructions at the pump inlet.
• Assess pump bearings: If a grinding or high-pitched whine persists, the wash pump bearings may be worn. Replace the wash pump assembly to prevent further damage.
• Verify water level: Ensure the tank fills to the correct level. Low water can cause cavitation noise; correct any fill issues.