Dishwasher Making a Loud Noise? Common Causes and Fixes
A dishwasher making a loud noise usually points to the pump or the spray arms. A grind or buzz often means a worn bearing or debris. Therefore, check the arms and the pump area first. Below, we list the parts to inspect.
Parts to inspect for a dishwasher making loud noise problem
1. Pump
The pump moves water through the machine. When it seizes or leaks, you may see water on the floor or a stalled cycle. Therefore, check the pump housing and seals for cracks and debris. Replace the pump if it leaks or no longer turns freely.
2. Wash Arm Bearing Ring & Spray Arm Seal
This ring and seal let the wash arm spin quietly and without leaks. When they wear, you hear noise and lose pressure. Therefore, inspect the ring and seal for grooves or cracks. Replace them if the arm wobbles or leaks.
3. Spray Arms
The spray arms rotate to cover the whole rack with water. When a nozzle clogs or an arm cracks, coverage drops. So clear each nozzle and check that the arms spin. Replace any arm that is split or warped.
Get the parts
We supply OEM and replacement parts in bulk. Browse the Appliance Parts catalog, or request a bulk quote for volume orders.
Is the unit old or failing often? A new ENERGY STAR certified dishwasher can cut water and energy use, so weigh a repair against a replacement.
Most of the time, a dishwasher making loud noise traces back to one worn part. So replace it, then run a short cycle to confirm the fix.