Why is my dishwasher leaking?

The dishwasher can malfunction and leak occasionally. On the floor, a little pool forms that swiftly spreads out from under the dishwasher door. Why is my dishwasher leaking, and how may the issue be resolved?

Why Is My Dishwasher Leaking

The sprinkler’s components may have worn out if the unit has been in use for a considerable amount of time. It develops delaminations and cracks when exposed to high water pressure. The liquid strikes the door as a result, causing a leaking dishwasher. Sometimes, it creates puddles underneath the dishwasher and runs into the tray. By fixing the worn sections or replacing the pieces, the issue is resolved.

Water seeps from under the door of the dishwasher

Do not start repairing the dishwasher right away or seek a professional if you discover a pool of water under the dishwasher leaking from bottom. Initially, rule out the subsequent factors:

Why is my dishwasher leaking?

  • The dishes were drying, and the dishwasher door was opened. The dishwasher’s drying cycle is producing a lot of steam. When the door is opened, the moisture escapes and collects on the countertop’s bottom edge. Droplets then fall to the floor from the door seal and create a little puddle underneath the door. This is entirely typical. Avoid this scenario by waiting until the dishwasher has finished drying before opening the machine.
  • It is not level with the appliance. The washing chamber and dishwasher tub are not completely sealed by the dishwasher door gasket that surrounds the door’s edge. It merely prevents splashing and facilitates the water’s return to the dishwasher. Water from below may flow into the door’s corners if the dishwasher is leaned forward. The machine must be leveled in order to stop the water leaking.
  • Dishwasher detergent issues include subpar quality and insufficient (excessive) dosage. Detergents of poor quality (tablets, rinse aid, and powder), as well as their overuse, can increase foam production. In this instance, the floor is covered in both water and foam. Use the dishwashing detergent that the maker of your dishwasher recommends and use the proper amount to prevent causes of dishwasher leaks.
Why Is My Dishwasher Leaking

  • A buildup of detergent within the dishwasher. Particularly if you use more detergent than is advised, residual detergent eventually accumulates in the dishwasher. When the machine is running, this causes more foam to form, and foam and water leak from the device. To get rid of extra detergent, put an empty washer through a lengthy, high-temperature wash cycle.
  • Clogged filters that remove food material from the water running throughout the wash cycle. In addition, it causes leaks at the bottom corners of the dishwasher door and excessive foam in the dishwasher. To avoid problems, regularly clean the filters. The instruction manual for your machine contains cleaning suggestions.
  • A built-in dishwasher’s door seal is covered in dirt. The fit of the seal is hampered by dirt and food debris adhering to it. The result is that the door allows steam to enter, which condenses on the worktop’s bottom edge and flows to the floor. The seal must be cleaned using a sponge dipped in warm water. Avoid using harsh products and rubbing too vigorously to prevent mechanical damage to the seal!

The advice given above did not work, and the dishwasher leaking. The issue is thus one of malfunction. Here is a list of common malfunctions that can result in dishwasher leaks.

Why is my dishwasher leaking? Causes a leaking dishwasher and their decision

Worn or damaged gasket

Because the seal doesn’t fit tightly, steam from the dishwasher condenses on the countertop and/or surrounding cabinets. The condensation drips down, and water forms under the dishwasher door.

Why is my dishwasher leaking?

Signs: The built-in dishwasher leaks from under the door during drying.

How to solve a problem: The seal needs to be replaced.

The water level sensor (press start, pressure switch) is defective

If the sensor is not working correctly, the machine draws more water than is necessary for washing and overflows. The pressure take-off chamber and/or the pressure switch tube may be dirty or the sensor itself may be defective.

Why is my dishwasher leaking?

Signs: When the water is drawn in, the machine leaks around the edges of the door. The extent of the leak may be significant, and the Aquastop may be activated.

How to solve a problem: If dirty, the technician will flush the pressure take-off chamber and/or the press-start hose. A defective sensor needs to be replaced.

Damage to the sprinkler (impeller)

In the case of mechanical damage to the sprinkler, the direction of the spray has changed, it got under the lower door seal during washing. Since the chamber is not completely sealed, leakage occurred.

Why is my dishwasher leaking?

Signs: The bottom corner of the leaky dishwasher door during washing, after the water has been drawn in.

How to solve a problem: The impeller needs to be replaced.

Damage to the door spring or hinge

The spring’s cable is typically frayed, which allows the spring’s pressure force to be transmitted when the door closes. Additionally, it keeps the door open to prevent it from collapsing. The careless operation can mechanically harm hinges (masters have seen instances when kids sat on automobile doors).

Why Is My Dishwasher Leaking

In both cases, the door on the drying cycle allows steam to pass through. In a built-in machine, it condenses on the inside of the worktop, and the moisture flows down under the door. If the door is badly misaligned, splashes get into the gaps between the door and the cabinet during washing, and the machine leaks.

Signs: The dishwasher leaks from under the door on the sink, and the door does not close properly or does not lock in the open position (falls down). The door may be visibly misaligned.

How to solve a problem: Hinge and/or spring replacement is required.

An internal dishwasher leak has occurred and the Aquastop has been activated

Underneath the dishwasher, there is a tray with a float sensor. When water enters the tray, the float floats, the leak sensor is activated, and the machine cuts off the water supply and starts the drain pump.

Why is my dishwasher leaking?

The dishwasher, as a rule, informs the user that the Aquastop has been triggered by an error code, which lights up on the display or flashes in the form of a combination of indicators (if the machine has no screen).

The Aquastop error codes depend on the brand of the dishwasher

Bosch, Siemens, and Neff

On models with a display, error E15 lights up. In models without a screen, the light with the “faucet” icon flashes.

Why is my dishwasher leaking?


On models with a display, the i30 error lights up. In dishwashers without a display, the “end of program” light flashes 3 times, and/or the machine beeps 3 times.

Ariston, Indesit

In models with a screen, dishwashers of these brands give error codes AL01, F01, or F1. In models with three or four program indicators, the first light on the left blinks. In Hotpoint-Ariston dishwashers with six program indicators, the first or third light on the left blinks (depending on the model).

Why is my dishwasher leaking?


In dishwasher models with a scoreboard, error E4 is displayed. In dishwashers without a display, the program indicator “3h” or the “ECO” light blinks rapidly, depending on the Hansa model.


In Whirlpool models with a display, the dishwasher writes codes F6, E4, E1 or F2. In models without a display, the “ECO” indicator blinks.


Dishwashers without a display panel show error Le or E4. In models without a display, the “Economy Wash” indicator flashes rapidly on the control panel.

Why is my dishwasher leaking?

What to do if the Aquastop is triggered and how to unlock it

Turn off the machine. Use the “on/off” button, and then unplug from the socket. Remove the water from the drip tray. To do this, slide the machine out and tilt it slightly toward you. Remove the side wall of the dishwasher and wipe the water in the tray with a cloth.

Make sure it is the dishwasher leaking water. Plug the machine in and start the program again. During washing, observe the machine and the surrounding plumbing (no leaks!). If the Aquastop is triggered again, you should look for water leaking from the machine itself. Did the wash go without any problems? This means that water got into the pan for some external reason: regular (for example, a sewer hole) or one-time (for example, lifting spilled water on the floor next to the machine).

If the leakage protection system in the dishwasher is activated, but there is no water in the tray, this indicates a malfunction of the Aquastop sensor or control unit.

Why Is My Dishwasher Leaking

When a fault is not the cause of the leak into the sump

The Aquastop’s activation does not always indicate a leak in the appliance, much less a malfunction. The following list of easily fixable causes for the leak protection system to be activated is provided.

The utility system leaks near the dishwasher

Most of the time, the sewer system, plumbing, and pipe connections are leaking rather than the dishwasher itself. Utility leaks cause water to stream into the tray, activating the Aquastop. Or there have been instances where housewives have dropped water on the countertop that the dishwasher was resting on, causing moisture to seep into the tray through the countertop’s joints and trigger the leak detection system.

Why is my dishwasher leaking?

Filthy filters

The dishwasher tub may overflow if the filters are blocked because the water does not circulate correctly during washing. The Aquastop system is consequently turned on. Cleaning clogged filters should be done in accordance with your dishwasher’s cleaning recommendations. In addition, manufacturers advise inspecting the filters’ condition after each dishwashing. If you’re not already, you should start now. Additionally, remove any substantial food particles from the plates before dumping them into the dishwasher. Doing so will stop the filters from clogging.

Detergents not meant for washing dishes

People who are new to using dishwashers frequently use hand dishwashing detergents (like Fairy). This causes a significant volume of foam to form. It exits the dishwasher dripping wet, falls onto the tray, and the Aquastop activates. If you find yourself in this circumstance, disconnect the cord from the dishwasher as quickly as you can. After that, empty the tray of its water and give everything a day or two to dry off. If the dishwasher won’t start washing dishes after drying, the control unit has probably flooded and needs to be repaired or replaced.

Why Is My Dishwasher Leaking

Clogging of the drain hose connection to the sink’s siphon

If a blocked trap is used with both the dishwasher and sink in use at the same time, water from the overflowing trap will pour into the dishwasher and cause an overflow. Drain the dishwasher’s sump of water and clean the sink trap to solve the issue. Install a check valve on the dishwasher drain line or connect the appliance directly to the sewer to stop water from the siphon from entering the dishwasher. You can also read more information on this topic.


  1. If you need to buy a new dishwasher, you should choose such a device only in proven, reliable places. In no case save on the quality of this sought-after and indispensable equipment, so as not to buy a device that will fail in the near future. You can also read information on how to replace an old dishwasher with a new one yourself.
  2. It is also important to choose a good detergent because it also affects the life of your dishwasher.
  3. Keep an eye on the condition of your appliance. Wash your dishwasher on time, removing food residues and used products. Check the constituent elements, whether there are no cracks on them, and whether corrosion has not started.
Why Is My Dishwasher Leaking

Thus, there are a large number of different possible reasons for a leaky dishwasher. You can even identify all of these damages yourself, for which you will first need to remove the bottom panel of the appliance. If, however, you fail, don’t forget that you can always seek the help of an experienced professional who will do everything properly. This is a more reliable option, especially if you are not strong at repairing different household appliances. But, however it may be, in any case, the choice is yours alone.

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