Why Is My Dishwasher Making Noise?

Jul 19, 2023, 15:47pm

It is normal that the dishwasher may make noise since the process during the cleaning process. The sound may be different when it comes to a wash cycle or a drain cycle. It will therefore be necessary to determine when you notice an abnormal noise.

  • If the noise how from the start of the program, it will be necessary to remember to check at the level of the drain. The dishwasher always begins by performing a drain which can last between 20 and 30 seconds.
  • On the other hand, if you have an abnormal noise during washing, it will be at the level of the washing arms that you will have to check. The circulation pump can also cause this noise.
  • If you have a dryer noise, it will be the dryer fan you need to check.

A dishwasher is a convenient appliance that helps simplify your kitchen chores. However, if it starts making unusual noises, it can be a cause for concern. Dishwashers are designed to operate quietly, so when you hear loud or strange noises, it’s important to investigate the issue. In this article, we will explore some common reasons why a dishwasher may make noise and provide guidance on how to address them.

Why Is My Dishwasher Making Noise?

1. Improper Loading

One of the most common reasons for dishwasher noise is improper loading of dishes and utensils. When items come into contact with each other or the spray arms, they can cause clattering or rattling sounds. Here’s what you can do:

  1. Arrange Dishes Properly: Make sure dishes, utensils, and cookware are properly spaced and do not touch one another. Ensure that they are positioned away from the spray arms to prevent any contact during the wash cycle.
  2. Avoid Overloading: Overloading the dishwasher can cause items to rub against each other and produce noise. Load the dishwasher according to the manufacturer’s recommendations, leaving enough space for water and detergent to circulate freely.

2. Loose Items or Utensils

Loose items or utensils within the dishwasher can also generate noise during the wash cycle. Here’s how to address this issue:

  1. Secure Loose Items: Check inside the dishwasher for any loose items, such as small lids, spoons, or other objects that may have fallen into the dishwasher. Remove them to prevent noise and potential damage to the dishwasher’s components.
  2. Use Utensil Baskets: Place utensils, such as spoons and forks, in the provided utensil basket to prevent them from moving around and creating noise.

3. Spray Arm Issues

The spray arms distribute water throughout the dishwasher to clean the dishes. If the spray arms are damaged, clogged, or misaligned, they can produce unusual noises. Here’s what you can do:

  1. Inspect the Spray Arms: Remove the spray arms and examine them for any visible damage, such as cracks or blockages. Clean the spray arms with a soft brush or toothbrush to remove any debris or mineral deposits that may be obstructing the water flow.
  2. Ensure Proper Alignment: Ensure that the spray arms are properly aligned and securely attached to the dishwasher. Adjust them if necessary to ensure they rotate freely without any obstructions.

4. Malfunctioning Motor or Pump

A malfunctioning motor or pump can also contribute to noise in a dishwasher. If these components are damaged or worn out, they may create unusual sounds during operation. In such cases, it is advisable to seek the assistance of a professional appliance technician to diagnose and repair the issue.

5. Water Inlet Valve Issues

If the water inlet valve is not functioning correctly, it can result in noise during the dishwasher’s operation. The valve may produce a humming or buzzing sound when there is a restricted water flow. Consider the following steps:

  1. Check the Water Inlet Valve: Inspect the water inlet valve for any signs of damage or blockages. Ensure that it is fully open and allowing adequate water flow into the dishwasher.
  2. Replace the Water Inlet Valve: If the water inlet valve is malfunctioning or restricted, it may need to be replaced. Consult your dishwasher’s manual or contact a professional technician for assistance.

6. Loose or Worn Out Parts

Loose or worn out parts within the dishwasher can also cause noise during operation. Loose screws, fasteners, or brackets can create rattling or vibrating sounds. Inspect the dishwasher’s interior for any loose parts and tighten them as needed. If parts are worn out or damaged, they may require replacement.


The circulation pump and drain pump are working properly. Then check if the hose from the tank to the circulation pump and the hose from the tank to the drain pump are clogged.

If the hose of one of the two pumps is clogged, it is this that causes abnormal noises in the dishwasher during the wash cycle. Clean it, and also check the drain filter, as it may be punctured or cracked and allow foreign bodies to pass through.

Why Is My Dishwasher Making Noise?


Most dishwashers are equipped with a fan dryer. It can be placed in the control panel or under the tank.

A condensing or turbo dryer works with a fan. If the fan is no longer running, it may make abnormal noise. In this case, it must be replaced.

To test a fan, select 200 or 600 ohm caliber on your multimeter, then measure its ohmic resistance, which should be between 100 and 300 ohms.

In conclusion, a dishwasher that makes noise can be caused by various factors, including improper loading, loose items, spray arm issues, malfunctioning motor or pump, water inlet valve problems, or loose or worn out parts. By following the troubleshooting steps outlined in this article, you can identify and resolve many of these issues. However, if the problem persists or you are unsure about performing any repairs yourself, it is best to consult a professional technician for further assistance. They will be able to diagnose the underlying cause of the noise and provide the appropriate repair solution, ensuring your dishwasher operates quietly and efficiently.