Why Is My Dishwasher Leaking? 8 Most Common Causes

You may have to sometimes deal with your dishwasher leaking. As a dishwasher owner, you should be aware of the various causes of dishwasher leaking and how to prevent it from happening again. Read on for some tips that will help you diagnose and fix any leak in your machine so that it works properly again.

The dishwasher is one of the most used appliances in a household. This is why it can be really annoying when your dishwasher starts leaking. A dishwasher is a device that cleans dishes by washing them with water and detergent. It washes the dishes and then drains out the dirty water, leaving behind clean dishes.

To make sure that you’re dealing with the leaking issue, the first thing you should do is check for leaks at all connections between the dishware and fittings in the washer’s bottom basket as well as around any connection from under the dishwasher.

How To Fix Dishwasher Leaking Problem

Why Is My Dishwasher Leaking? 8 Most Common Causes

If you’re looking for a quick and easy way to get your dishwasher working again, consult the owner’s manual or research your model number online. Many of the major appliance manufacturers, including Bosch, GE, Frigidaire, Samsung, LG, and Kitchenaid, have great websites with dedicated customer support teams and experts. Plus, you can look up a local retailer for parts or perhaps contact an expert online.

Faulty Dishwasher Door Gasket

Have you noticed that your dishwasher door gasket isn’t creating a watertight seal anymore? If so, it may be time to replace the old one. You can start by checking for signs of water leaking from the sides of the dishwasher and looking for dried-on food, cracks, or missing pieces on the gasket.

Water leaking from under your dishwasher door is never a good sign. This could mean that your current dishwasher door gasket is faulty.

A gasket can lose its shape over time, and it might have a few small damaged areas. If you have a dishwasher that leaks, check the gasket carefully. It’s not always easy to see. If you discover hidden damage, a repair is necessary.

If your dishwasher leaks around the door, try tightening the screws in the hinges to remove any play from them and tighten screws attaching the dishwasher’s plastic outer shell to its metal body. If you’ve determined that a seal needs replacing, consult with your appliance retailer about which part is best suited for your model number.

The gasket or seal around your dishwasher is normally made of soft rubber or vinyl. When this material ages, it can become less flexible or even brittle and may not provide the needed watertight seal. If this gasket is damaged or worn out, the machine will leak water.

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The gasket or seal around your dishwasher is normally made of soft rubber or vinyl. When this material ages, it can become less flexible or even brittle and may not provide the needed watertight seal. If this gasket is damaged or worn out, the machine will leak water.

Open your dishwasher to observe its surface to detect any signs of excessive wear. Dishwasher manufacturers usually make replacement parts available to solve problems. Replace the old gasket with a new one.

Clogged or Stuck Spray Arm

You’ve found a leak in your dishwasher. How do you discover it? The spray arm on the inside of the appliance spins around while it is running. But if you are not using enough dishes or utensils, they may become dislodged, spills and leaks are inevitable. Additionally, the risk of damage and failure increases among appliances that are overcrowded with too many dishes or utensils, particularly if they have been used for years without any maintenance.

To ensure your dishwasher is functioning properly and preventing leaks, and stopping Dishwasher Leaking, read the manufacturer’s manual for maintenance instructions.

What is a Stuck Spray Arm? When you use your dishwasher, the rotating spray arm will spray water onto dishes to clean them. However, if there are too many utensils or dishes in the machine, then they may block the movement.

What does a clogged spray arm mean for your dishwasher? It means that your dishes will not be getting properly cleaned. A stuck or clogged spray arm is usually caused by something blocking the hole, such as fallen silverware or residue build-up.

Open the dishwasher, remove the lower rack, and spin the spray arm back and forth to make sure it works. Unscrew the spray arm counter-clockwise to remove it and inspect for damage such as cracks or blocked holes. If you find any of these problems, replace the part with a new one.

Faulty Float Switch

When the dishwasher performs a wash cycle, it has two parts: a float assembly and a float switch. When the water reaches the right level, the float rises and turns off the water. If the float malfunctions or fails, the water level could get too high in the dishwasher, causing a leak.

The float is a small ball attached to the end of a rod, which can be found inside your dishwasher. The float switch is also located at the bottom of the dishwasher and helps turn off the water when it reaches an appropriate level.

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When there’s water in your dishwasher, you should see a silver or white round ball sticking up about 1/2 inch above any other objects that are touching it. If this isn’t happening, then something might be wrong with your appliance.

First, check the water levels. If they’re above the heating element, you may need to replace the float switch. Or, test the float switch directly with a multimeter by unscrewing the kickplate panel below the door and disconnecting its wires from any connections in order to test for continuity.

Loose or Damaged Drain Hose

The water in your dishwasher doesn’t disappear once it leaves the machine. Instead, it travels to a drain hose and into a line that feeds out of your sink’s drain pipe.

A hose in a dishwasher can become loose, crack, or even tear, the dishwasher leaking water problem will occur as the water will flow onto the floor instead of exiting through the drain hose. A damaged drain hose is visible only when you remove the kickplate panel at your appliance base.

Don’t worry about prying open those old fittings. Start by checking the pressure in your hoses. You’re probably using one of those rubber garden hose fittings, which is good. Tighten those fittings a little and try running water. If the pressure stays the same in both hoses, you’re good. If it still leaks, then please purchase a new one.

Clogged Dishwasher Filter

We’ve all been there – the dishwasher starts leaking water from the bottom of the door. Clogged dishwasher filters are annoying and frustrating, especially when you’re in the middle of a load of dishes. To prevent this from happening, you should regularly clean your filter to remove the build-up of food particles and any other foreign objects impacting its performance.

How often do you clean your dishwasher filter? Run a load of dishes through the dishwasher? If not, you may want to do it more. Your dishwasher is still running efficiently if it doesn’t need to be cleaned on a timely basis, but every few weeks is best. This will reduce the amount of wear and tear on the dishwasher motor itself and the filter.

Unlevel Dishwasher

A dishwasher that isn’t level can cause water to pool up and leak from the door. To avoid this, check the horizontal and vertical levels of your dishwasher. Adjust as needed to make sure it is even on all sides.

Your dishwasher must be level. If it isn’t, the water can pool under the unit and lead to rusting or other possible issues. Place a level in the bottom of your dishwasher. If misaligned, place shims under the unit and measure again. Adjust until you’ve perfectly leveled your dishwasher for optimal performance.

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Faulty Pump

A defective or leaky dishwasher pump can be the cause of an overflowing dishwasher. If you’re dealing with a leaky dishwasher, make sure that the entire appliance isn’t faulty before searching for any leaks. It will also save you time and money if you solve your problem right away rather than waiting for it to happen again and again.

A typical pump consists of two separate compartments. One side will be used for circulation and the other will be used for draining. The circulation side will typically consist of a wash impeller, or in some cases, a sink strainer, while the drain side will consist of a drain impeller and a chopper blade.

The pump’s function is to circulate water in the dishwasher and, in some models, to drain the water as well. A faulty or damaged pump can cause leaks that can lead to an overflow of dirty water from your kitchen sink into your home’s crawl space. It will create an unsanitary environment for both you and your family and increase the costs.

Water Inlet Valve

The water inlet valve is the first stop in your dishwasher, prioritizing and directing water flow to where it is needed. Finding the problem with your dishwasher, therefore, is fairly straight forward. Close to the inlet valve is the lower kick plate, usually easily accessible. The hot water supply valve is normally located on the water supply line directly from the tank.

To determine if a dishwasher is leaking, look for slow drips from the lower edge of the water inlet valve. If you don’t see any leaks or water dripping down, shut off the water supply and check to see if there is evidence of a leak near the leaking water valve (the one at the bottom).


If you’re having a problem with your dishwasher leaking, don’t take matters into your own hands. A professional can help diagnose and solve your washing machine issue in the home. Not all consumers have the training to make repairs themselves, so a technician can easily save a customer money (and a lot of frustration).

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