Dishwasher Leaking Water Reasons & How to Fix It?

Dealing with a dishwasher leaking water can be frustrating and messy, but understanding the reasons behind it can help you tackle the issue effectively. Here are some common causes of dishwashers leaking water and provide step-by-step instructions on how to fix them. From inspecting the gasket to replacing the float switch, we've got you covered. 


Easily Fix Dishwasher Leaking Water 


Water leaking from the sides of the dishwasher

If you notice water seeping out from the sides of the dishwasher, it's advisable to inspect the gasket for any signs of dried food residue, cracks, or areas where pieces may be missing. Simply open the dishwasher door and glide your hand along the gasket to conduct this examination thoroughly. 

How to fix it: Install a new gasket. If you find the door gasket is compromised, it's feasible to replace it yourself. Refer to your owner’s manual to identify the model details, enabling you to acquire an appropriate replacement part from a nearby large retailer or directly from the manufacturer.

Begin by removing the old gasket, and gently peeling it away from the door. Clean the channel thoroughly using warm, soapy water. To ensure the new door gasket is pliable and free of folds, use a hairdryer on low heat to warm it up. Position the centre of the gasket along the top of the door, then press evenly across the top and down both sides. Finally, close the dishwasher door to securely seal the gasket in place.


A stuck or clogged spray arm

Open the dishwasher door, extract the lower dish rack, and manually rotate the spray arm to test its mobility. If you encounter any resistance, investigate for potential blockages such as fallen utensils or accumulations of residue. Next, remove the spray arm by unscrewing it in a counterclockwise direction and examine it for any signs of damage such as cracks or clogged openings.

How to fix it: You can easily acquire a new one from the manufacturer and undertake the replacement yourself. Begin by unscrewing the defective spray arm in a counter-clockwise direction if you haven’t already done so. Then, align the centre hub of the new arm with the opening on the dishwasher floor and securely screw it in clockwise. Verify that it rotates smoothly, and once satisfied, reinsert the bottom dish rack.


Water exceeding the heating element's level and/or lack of continuity was observed at the float switch during multimeter testing.

Pause the dishwasher mid-cycle to assess the situation. Ideally, water levels should remain beneath the heating element; if not, it might be necessary to replace the float switch. Alternatively, you can directly test the float switch using a multimeter. To do so, unscrew the kickplate panel located below the door, and disconnect the wires from the switch in order to test its continuity.

How to fix it: Install a new float switch to replace the defective one. While it's possible to perform this replacement yourself, it's a more intricate repair compared to others mentioned. Refer to your owner’s manual and any provided instructions accompanying the replacement part before removing the old float switch and installing the new one. Secure the new switch in place using screws or clips, reconnect the wires to the float assembly, and reattach the kickplate panel. If you're unsure about the wiring process, it's advisable to seek assistance from a technician.


Water accumulation along the drain hose underneath the appliance

To investigate further, detach the kickplate located beneath the dishwasher door. While the dishwasher is running, inspect beneath the machine for any signs of water leakage at the hose clamps or along the hose itself.

How to fix it: If you notice any loose fittings, tighten them securely, or opt for a manufacturer-approved replacement hose. Once the dishwasher cycle completes, switch off the appliance's power. Then, position a shallow pan beneath the hose to catch any water, and utilise pliers to pinch the hose clamp, detaching the hose from the pump. Repeat this step on the sink drain side to fully remove the hose. Connect each end of the new drain hose, reattach the clamps, and reinstall the access panel.



By addressing the dishwasher leaking from the bottom, you can save yourself from potential water damage and keep your kitchen running smoothly. However, if you find yourself needing additional assistance or parts, Appliance Giant is here to help. With our wide selection of dishwasher parts and knowledgeable staff, we can provide you with the support and resources you need to get your dishwasher back in top condition. Don't let leaks dampen your day, let Appliance Giant be your trusted partner in appliance repair.