Dishwasher Making Buzzing Noise? Top 6 Fixes to Restore Peace!

by | Last updated Oct 27, 2023

Expecting a peaceful time in the kitchen when suddenly interrupted by your dishwasher making a buzzing noise. It’s like an uninvited guest at a quiet dinner party. We’ve all been there, haven’t we? The murmur of a happy home was suddenly overshadowed by the mysterious humming and buzzing from one corner. Before thinking of ditching the whole machine, take a deep breath. You’re not alone in this; more importantly, there’s probably a simple fix.

Dishwashers, as incredible as they are, can sometimes act up. But just like any other household machine, understanding the root of the problem is half the battle. And that’s precisely why you’re here, right? You want answers. You want that soothing quiet back in your kitchen.

Stick around because we’re about to dive deep into the top 6 fixes that’ll help restore peace to your kitchen. By the end of this guide, you’ll be well-equipped to silence that pesky buzzing noise and be the household hero for the day. Ready? Let’s roll up those sleeves and get started!

The Evolution of Dishwasher Noise

Did you know? Early dishwashers from the 1970s were incredibly noisy, often reaching up to 80 decibels during their cycles. That’s as loud as a garbage disposal or a busy city street! Imagine trying to have a peaceful meal with that racket in the background. Thankfully, technology has come a long way since then.

Quick Safety and Precautionary Tips

Before diving into the nuts and bolts of dishwasher maintenance or troubleshooting, it’s essential to grasp some fundamental safety guidelines. After all, knowledge is power, especially when it keeps you safe! Here are some handy tips to ensure your safety while dealing with dishwasher issues:

Unplug Before You Tug

Always disconnect the dishwasher from its power source before attempting repairs or maintenance. It’s a simple step but the foundation of safe appliance handling.

Water Woes

Since dishwashers involve water, be cautious about potential leaks. Ensure the floor around your appliance is dry to avoid any accidental slips. If you spot a puddle, wipe it up immediately.

Tool Talk

When using tools around your dishwasher, ensure they’re in good condition. Avoid using rusty or broken tools. Not only can they damage your appliance, but they can also pose safety hazards.

Glove Love

Consider wearing rubber gloves, especially when dealing with internal components. They can offer a good grip and provide protection against any sharp edges.

Manual Matters

If in doubt, consult the user manual. It might seem old-school, but manufacturers often include valuable safety and troubleshooting tips tailored to your specific model.

Avoid DIY Overdrive

While fixing minor issues yourself is commendable, recognize when a problem is beyond your expertise. It’s wiser to call in a professional rather than risk further damage in such cases.

Cause #1: Misaligned or Loose Spray Arm

Visual representation of a loose spray arm inside a dishwasher.

How to Check

Your dishwasher’s spray arm distributes water during the cleaning cycle. But, like anything, it can become loose or misaligned due to frequent use. To check, open the dishwasher and spin the spray arm gently with your hand. It should move smoothly without any hindrance. If it’s wobbling or seems off its track, you’ve likely identified the issue.

Fixing the Issue

Fixing a misaligned spray arm is relatively straightforward. Here’s how:

  1. Make sure your dishwasher is unplugged or switched off at the wall.
  2. If the spray arm is loose, try tightening it by hand or with a gentle twist using pliers.
  3. If it’s off its track, gently realign it, ensuring it fits snugly into its mounting.
  4. Once done, spin it once more to check its movement. If it spins smoothly, you’re good to go!

Cause #2: Faulty Drain Pump

Identifying the Problem

The drain pump’s job is to remove water from the dishwasher once the cycle is done. If you hear unusual noises or find water remaining at the bottom, there’s a chance your drain pump is acting up.

Steps to Resolve

  1. First, always unplug the dishwasher or ensure it’s switched off at the wall.
  2. Open the dishwasher and locate the drain pump. It’s usually at the bottom, beneath the spray arm.
  3. Check for any visible blockages like food debris or small objects. Clean these out if you find any.
  4. If there’s no blockage, the pump might be failing. In this case, you might need to consider replacing it. If you’re uncomfortable doing this yourself, it’s a good idea to call a technician to handle it.

Cause #3: Debris or Foreign Objects

Where to Look

Have you ever had a sneaky piece of cutlery slip through the dishwasher racks? Or did you notice a small plastic wrapper making its rounds? Debris or foreign objects in the dishwasher can cause those buzzing or rattling sounds. Start by examining the bottom of the dishwasher, especially around the drain. That’s where most of these uninvited guests hang out.

Clearing the Pathway

  1. Ensure the dishwasher is off and unplugged.
  2. Wear gloves, and carefully inspect the dishwasher’s floor and drain area.
  3. Remove any foreign objects or debris you find. Using tweezers or pliers can help with smaller items.
  4. Once cleared, run a quick rinse cycle to flush out any remaining small particles. For a thorough cleaning, check out The Easiest Way to Clean a Dishwasher.

Cause #4: Worn Out Motor Bearings

Symptoms and Diagnosis

The motor bearings in your dishwasher help everything run smoothly. But they can wear out with time, causing a grinding or buzzing noise. If the sound seems to come from the bottom or rear and gets louder as the cycle goes on, worn-out bearings might be your culprit.

Replacing the Bearings

  1. First, safety! Ensure the dishwasher is off and unplugged.
  2. Accessing and replacing bearings often requires removing the motor, which can be quite technical. If you have experience, you can replace the bearings yourself. But, if not, it might be wise to leave this task to the pros.
  3. If you’re going the DIY route, after removing the motor, locate the bearings. They might look rusty or worn out.
  4. Replace with new bearings, ensuring they fit securely.
  5. Reassemble everything and give it a test run.

Cause #5: Malfunctioning Fan

Spotting the Issue

Have you ever wondered about that buzzing sound during your dishwasher’s drying cycle? It could be due to the fan. This little gadget is crucial for drying your dishes and ensuring no unwanted moisture remains. If it’s on the fritz, you’ll likely hear noises that aren’t the norm.

Repair vs. Replacement

Fans can get jammed by debris or wear out over time. Give it a quick clean; sometimes, that’s all it takes! If cleaning doesn’t do the trick, consider its age. If it’s been with you for a while, getting a new fan might be the way to go. Replacing can sometimes be more budget-friendly than repairing! If you decide on a full replacement, here’s a guide on How to Install or Replace a Dishwasher.

Cause #6: Damaged Seals or Gaskets

Technician demonstrating the repair of a damaged dishwasher seal in a modern kitchen

Recognizing the Signs

Now, onto the seals and gaskets. These little unsung heroes ensure that water stays inside your dishwasher. You might spot water puddles around the dishwasher if they feel under the weather. Oh, and the door might seem a tad rebellious, not closing as smoothly as before.

Fixing the Leak

  1. Safety first! Always make sure the dishwasher is turned off and unplugged.
  2. Have a close peek at the door seal. Look out for any signs of wear, like cracks or parts that aren’t snug.
  3. Gently clean the seals with a soft cloth dipped in mild soap water. Sometimes, they just need a bit of TLC!
  4. Spot damage? It might be time to say goodbye. Replace the seal by following the manufacturer’s guide or call in a pro if you’re unsure.

Additional Tips: Preventing Future Buzzes

Person showcasing preventive measures inside a dishwasher to avoid future buzzing sounds.

Preventing issues is always more accessible (and cheaper) than fixing them. Here’s your easy-peasy guide to ensure your dishwasher hums a melodious tune:

Routine Check-ups

Just like we need regular health checks, your dishwasher benefits from periodic inspections. Give it a once-over every month to spot minor issues before they turn major.

Cleanliness is Key

Remember the debris that could jam the fan? A regular cleaning routine keeps those away. Empty the filter basket, wipe the seals, and run a cleaning cycle with vinegar. This will prevent those annoying buzzes and extend the machine’s lifespan.

Load it Right

Did you ever consider how you load your dishes could affect the amount of noise they make? Overloading or placing dishes haphazardly might obstruct the spray arms, leading to unwanted buzzing. Always follow the manual’s guidelines on loading dishes. For extra tips and tricks, check out How to Load Your Dishwasher Properly.

Soft Landing

When closing the dishwasher door, avoid slamming it. A gentle shut preserves the door seals and latch, reducing the chances of leaks and noise.

Quality Detergent

It’s tempting to go for the cheaper option, but quality dishwasher detergents can prevent residue build-up, ensuring smooth operation and less noise. If you’re wondering what to choose, have a look at What is the Best Dishwasher Detergent. Interested in a DIY approach? Here’s an Easy Guide to Homemade Dishwasher Detergent.

Stay Updated

Technology is ever-evolving. Every once in a while, check for any updates or recalls for your dishwasher model. Staying updated ensures optimal performance.

Good Vibes Only!

Almost 60% of dishwasher issues, including noise, can be fixed with simple DIY solutions. Save cash, enjoy the serenity, and take pride in your handy work!

Dishwasher Making Buzzing Noise? Wrapping Up Our Quiet Solutions

As we wrap up our journey into the world of dishwasher buzzing sounds, it’s clear that while unexpected noises can be jarring, they’re often just the machine’s way of communicating a hiccup. Armed with the knowledge from our deep dive into the top 6 causes and their fixes, you’re now more than ready to tackle any buzzing, humming, or other strange sounds your dishwasher might throw your way. Regular maintenance and a keen ear can save you time, money, and unnecessary stress. With patience and the right approach, restoring peace to your kitchen is entirely within reach. Here’s to many more silent, serene dishwashing cycles ahead. Cheers to a quieter home!

Dishwasher Noises Explained: What They Mean & How to Fix Them

Understanding your dishwasher’s quirks and sounds brings peace of mind and extends your appliance’s life. It’s about more than just identifying the problem but also learning how to address it. This way, you’re not just saving on potential repair costs but also ensuring your kitchen buddy’s efficiency and longevity.

From rattling and clanking to high-pitched whirring, we’ve got you covered. With this guide, you won’t just be able to decode the different sounds but also know how to remedy them. So, are you ready to become the detective of dishwasher noises in your home? Stick around, and let’s demystify those perplexing noises together!

Recognizing the Distinctive Sounds

Every appliance has unique sounds, and your dishwasher is no different. Understanding these noises is crucial in troubleshooting, like how we differentiate a cat’s meow from a dog’s bark.

Bubbling Secrets

Some dishwashers have a distinct bubble-pop sound during the drying phase. It’s like they’re cheering for clean dishes. Listen in and celebrate with them! Join the bubbly party every time you run a cycle!

#1. Rattling and Clanking Sounds

Visual representation showcasing the correct arrangement of utensils and dishes in a dishwasher to prevent buzzing noise during operation.

Imagine a mini rock concert happening inside your dishwasher. It’s trying to get your attention if you hear rattling or clanking!


  • Sometimes, the dishes and utensils might need to be stacked properly. They might dance around during the wash cycle if it is not settled well.
  • Over time, parts inside the dishwasher, like the spray arm or dish rack, might become loose, causing these sounds.

Quick Fixes

  • Before starting your dishwasher, ensure all dishes and utensils are snugly and logically placed. This reduces the chances of them knocking into each other.
  • Check for any loose parts. If the spray arm is wobbly or a rack is not sliding smoothly, it might be time to secure or replace them.

#2. High-pitched whirring or Buzzing

A persistent high-pitched noise can seem like your dishwasher has taken up whistling. But what’s really causing this mini-orchestra?

Tracking Down the Issue

  • The motor is the heart of your dishwasher. Sometimes, it might produce a high-pitched sound when it’s working extra hard or starting to wear out.
  • The fan, which aids in drying the dishes, might produce this noise if it’s misaligned or clogged.

How to Address It

  • Regular cleaning can alleviate strain on the motor. Occasionally, using a specific dishwasher cleaning solution is also a good idea.
  • Ensure the fan is clear of any obstructions. A slight adjustment or even a replacement might be necessary if it appears misaligned.

#3. Gurgling and Sloshing Noises

Have you ever felt like there’s a mini-waterfall inside your dishwasher? When you hear gurgling and sloshing, it’s just the machine doing its thing. But why does this sound occur?

What’s Happening Inside?

  • These sounds often result from water being pumped around the dishwasher. This is an entirely natural part of the wash cycle.
  • The gurgling can signify water draining out at the end of a cycle. If it sounds too prominent, check for potential blockages.

Quick Fixes

  • Make sure there’s no food debris clogging the drain.
  • Ensure that dishes are correctly loaded and not blocking water jets or drains.

#4. Grinding or Growling Sounds

It can be alarming when your dishwasher seems to growl at you. But don’t worry, it’s not turning into a beast!

Unmasking the Mechanical Troubles

  • The motor’s components can wear down over time, leading to these grinding noises.
  • Bits of food can sometimes get caught in the chopper blade area, causing a growling sound.

Quick Fixes

  • You might need a professional repair or replacement if the motor is worn out or damaged.
  • Ensure that the chopper area is free from any food debris.

#5. Hissing or Steaming Noises

Hissing might make you think of snakes, but it’s an entirely different story in the context of a dishwasher!

Decoding the Heat Cycle

  • The hissing sound is typically steam escaping during the drying phase. It’s an indication that your dishes are getting thoroughly dry.
  • If the sound is persistent, it might be the heating element heating up the water. This is a routine part of the cycle to ensure your dishes come out squeaky clean.

Sound Solutions

Your dishwasher can make some odd noises, right? But now, you know what they might mean and how to handle them. Some sounds are just your machine doing its job, while others might need a little check-up. No need to stress or call for help right away. Use our tips to see if you can fix the minor issues. And remember, a happy dishwasher means a quiet kitchen! Keep this guide handy, and you’ll always be prepared. 

At WashDryDazzle, our primary goal is to equip you with invaluable knowledge to simplify your day-to-day tasks; to explore more, check out our central hub of Dishwasher Guides.

Frequently Asked Questions(FAQs)

Why does my Bosch dishwasher make a humming sound during its cycle?

Bosch dishwashers utilize a particular pump system, and a light humming noise is common during operation. If the noise becomes too loud, it might be due to debris caught in the pump or a potential issue with the motor.

My Samsung dishwasher is producing a high-pitched sound. Is this normal?

While some operational noises are standard for Samsung dishwashers, a high-pitched sound might indicate a problem with the fan or water inlet valve. Consider checking these components or seeking professional assistance.

Why does my Whirlpool dishwasher make a clicking noise during the drying phase?

The clicking sound in Whirlpool dishwashers can often be attributed to the heating element activating during the drying cycle. It’s usually a normal operational sound, but it might indicate a malfunction if it becomes frequent or loud.

My Miele dishwasher occasionally produces a knocking sound. What could be the cause?

Knocking sounds in Miele dishwashers can be due to improperly loaded dishes or the water hose hitting the back wall. Ensure that dishes are securely placed, and there’s no interference with the water hose.

Is it normal for my LG dishwasher to make a gurgling sound during draining?

A gurgling sound is typically the sound of drained water in LG dishwashers. However, if it’s louder than usual, there might be a blockage in the drain or an issue with the drain pump.

I hear a grinding noise from my KitchenAid dishwasher. What should I do?

A grinding noise from a KitchenAid dishwasher might indicate a foreign object caught in the chopper blade or motor. Turn off the unit and inspect for any debris. If the problem persists, consider contacting a technician.



Home Appliances Expert

A. Ditta, a highly regarded authority in home appliances, contributes his expertise to With 15 years of global experience, Ditta's writings stand out for their quality, accuracy, and user-centric approach. Recognized as a reliable source for washing and drying products, his in-depth knowledge and commitment to providing clear, accurate advice make him a trusted guide for readers worldwide. Ditta’s work is a testimony to his profound expertise in the industry.