Dishwasher Leaking from Pump – What Part Fixes This Problem?
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Understanding the Problem
A leak coming from the area under the dishwasher—around the pump or sump—is commonly caused by a failed pump seal, cracked pump housing, or a loose/damaged hose connection at the pump. The pump(s) sit under the tub and circulate or drain wash water; when seals deteriorate or housings fail, water escapes during the wash or drain cycles and collects under the unit, often dripping onto the floor. Diagnosing this requires removing the toe panel and inspecting the pump area while the unit runs (or performing a short test cycle). Visible dripping, wet residue, or spray coming from the pump housing or hose connections point to a pump assembly, gasket, or hose clamp issue. In many cases the fix is to replace the damaged pump assembly or the pump seal/gasket kit, but if a hose clamp is loose or a hose split, replacing the hose and retightening clamps can stop the leak.
Common Symptoms
Puddles or moisture under/around the dishwasher during or after a cycle, audible dripping, dishwasher not draining properly, intermittent water on floor near door, or visible spray under the tub.
Common Causes
- Worn or failed pump seal or O-ring allowing water to escape the pump housing
- Cracked or corroded pump/circulation housing or sump resulting in a through leak
- Loose, damaged or disconnected drain/recirculation hose or hose clamp at the pump connection
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
To confirm the source, place dry paper towels under the pump area, run a short wash or drain cycle, then watch where the towels first get wet—this pinpoints whether the leak is at the pump housing, a hose connection, or the sump seal.
Frequently Asked Questions
Can I keep using the dishwasher if it’s leaking from the pump?
No — you should stop using it until the leak is diagnosed. Running it can cause water damage to cabinets and floors, and may short electrical components. Turn off the water supply and power, dry the area, and inspect or call a technician.
How much does it cost to fix a pump leak?
Parts typically range from $20 for simple seal kits or hoses to $150–$300 for a full pump/motor assembly; labor for a service call and repair usually adds $100–$300 depending on location and complexity. Exact cost depends on brand and whether the sump or pump housing needs replacement.
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Whether your dishwasher won't drain, your dryer stopped heating, or your fridge isn't cold, we've created simple repair guides for the most common appliance problems homeowners face. Each guide explains what's going wrong, the most likely causes, and which replacement parts fix the issue. When you're ready to order, we link directly to PartsDiscount.com where you can search by model number and get the right part shipped fast.