Washer Drain Pump Clogged

A clogged drain pump is one of the most common washer repairs there is, and one of the cheapest to fix, because most washers put an access door directly over the pump's filter specifically so owners can clear it themselves without opening the cabinet.

The giveaway for a clog specifically, rather than a failed pump motor, is that the pump usually still runs -- you can hear it humming or buzzing at the point in the cycle where it should drain -- but water does not actually leave the tub, or leaves very slowly.

If the pump makes no sound at all rather than humming against a clog, the problem is more likely a dead pump motor, a switch, or wiring rather than a clog; see the pump not working guide for that case.

Safety first. Washer repair involves electricity, water under pressure, and moving mechanical parts.

Take a photo of any wiring or hose routing before disconnecting it, and set screws and small parts aside in the order removed -- this alone prevents most reassembly mistakes.

Most Likely Causes

  1. Foreign objects in the filter/impeller — The most common cause, with coins, buttons, hair ties, and small toys caught in the filter basket in front of the pump impeller. How to check: open the pump filter access door on the lower front panel, have a shallow pan ready to catch residual water, and remove the filter to check for debris.
  2. Lint and fabric fiber buildup — Even without a single obstruction, a thick mat of lint and fiber can restrict the pump enough to slow or stop drainage, especially if the filter has not been cleaned in a long time. How to check: after removing any obvious debris, rinse the filter itself under running water and check whether it was coated in a dense fiber layer.
  3. Clog inside the drain hose — A blockage can sit in the hose itself rather than at the pump, especially at a kink or at the connection to the standpipe. How to check: disconnect the drain hose at both ends and run water through it to confirm it flows freely.
  4. Pump Motor worn from running against a clog — Repeatedly running against a blockage can shorten the life of the Pump Motor (part 8535760), so a machine with a long history of clogs may need the motor replaced even after the clog is cleared. How to check: after clearing the filter, run a drain-only cycle and confirm the pump sounds normal rather than straining or grinding.
  5. Standpipe or household drain blockage — Rare, but the washer's own drain path can be completely clear while the branch drain line or standpipe it empties into is blocked further downstream. How to check: if a completely clean pump filter and hose still does not resolve slow draining, check whether a nearby sink or floor drain is also draining slowly, which points to the household plumbing rather than the washer.

How Often to Clean the Filter

Clean the drain pump filter every one to three months for an average household, more often if you regularly wash items with loose change, pet hair, or small debris in pockets. Waiting until the washer visibly stops draining means the filter is usually already packed solid, so treat filter cleaning as routine maintenance rather than a repair you only do after something goes wrong.

Tools You Will Need

Most of the checks on this page use the same basic kit: a Phillips and flat-head screwdriver set for opening panels, a multimeter set to continuity/ohms for testing switches and motor windings, a flashlight for looking inside the cabinet, needle-nose pliers for hose clamps and small connectors, and a shallow pan with a towel for any step that involves disconnecting a hose or opening the pump filter access door. None of the checks above require specialty tools. Photograph any wiring harness or hose routing before disconnecting it so reassembly matches exactly, and keep screws grouped by the panel they came from rather than in one pile -- washers use several different screw lengths, and mixing them up is a common cause of a rattle appearing right after a repair.

When to Call a Professional

Most of the parts and checks covered on this page are within reach of a confident DIY repair with basic hand tools and an afternoon. Call a licensed appliance technician instead if a check requires working inside a sealed system, if you find damaged household wiring beyond the washer's own power cord, or if the suspected part sits behind a transmission or tub assembly that requires substantially disassembling the cabinet and you are not comfortable reassembling it correctly. A second, paid diagnosis is also worth it any time you have already replaced one suspected part and the exact same symptom returns.

How to Confirm Before You Buy

Before ordering any replacement part, take a minute to confirm the fit -- it is the difference between a repair that works the first time and a part that has to be looked up twice.

  1. Find the model/serial plate. On a top-load washer it is usually under the lid, along the rim of the tub opening. On a front-load washer, check the back panel or around the inside of the door opening. See how to find your model number for exact locations by appliance type.
  2. Read the full model number exactly as printed, including letters and dashes -- manufacturers often reuse near-identical model numbers across different production years that take different parts.
  3. Verify the part fits that model using our model and part lookup tool before ordering, rather than relying on a part looking similar to the one you are replacing.

The full model number matters more than the brand and appliance type alone: manufacturers commonly reuse one body design across many model numbers over several years, changing the exact door latch, control board, or pump partway through that run. Two washers that look identical sitting side by side can still take different parts if their model numbers differ, even by a single trailing letter or digit.

Check Your Exact Model

Part numbers and how a symptom shows up can vary even within the same brand and appliance type, so confirm your exact model before ordering anything. Start from one of these washer model pages, or look yours up directly:

Use the model and part lookup tool if your model is not listed above.

Related Washer Symptoms

Browse the full list of 87 repair symptoms for every appliance type, or use the model and part lookup tool to search by your exact model number.