Washer Won't Drain — Common Causes & Parts
Quick answer: Standing water at the end of a cycle is one of the most common washer problems, and the causes differ between top-load and front-load machines. Run a drain-only or spin-only cycle first if your model has one; if the water still does not clear, the problem is mechanical, not a one-time overload or unbalanced load.
Washer Won't Drain
Standing water at the end of a cycle is one of the most common washer problems. Here's what causes it.
Before opening the machine, run a drain-only or spin-only cycle if your model has one -- if the water still doesn't clear, the problem is mechanical rather than a one-time overload or unbalanced-load pause.
A washer that pauses partway through a cycle with the tub still full is not necessarily failing to drain at all -- many control boards deliberately pause and re-check for an unbalanced load before spinning, and will proceed once the load is redistributed. True drain failures leave water sitting at the very end of the complete cycle, after the machine has stopped and the door or lid unlocks.
Safety first. Appliance repair involves electricity, and depending on the appliance, gas, water lines, and moving mechanical parts.
- Unplug the appliance (or shut off the breaker) before removing any panel or touching internal components.
- Shut off the gas supply at the shutoff valve before working on a gas range, oven, or gas dryer.
- Shut off the water supply before disconnecting a hose, valve, or fitting on a washer, dishwasher, or refrigerator water line.
- Call a licensed technician if you are not confident identifying or safely accessing a part -- misdiagnosing an electrical or gas component can be dangerous.
Take a photo of any wiring or hose routing before you disconnect it, and set screws and small parts aside in the order you remove them -- this alone prevents most of the reassembly mistakes that turn a simple repair into a bigger one.
Common Causes
- Drain Pump (clogged or failed) — The #1 cause. Check the pump filter first -- coins, lint, and small items get trapped here.
- Lid Switch Assembly (top-load) — The washer won't spin or drain if the lid switch thinks the lid is open.
- Door Latch (front-load) — If the latch doesn't register closed, drain cycle won't run.
- Drive Belt — A broken belt means the drum and pump don't turn.
- Control Board — Rarer but possible -- the board fails to send the drain signal.
Check the drain pump filter first regardless of brand -- it is almost always accessible from a small door on the lower front of the machine and takes minutes to clear, versus hours to replace a drive belt or control board.
Top-Load vs. Front-Load Differences
Top-load washers rely on a lid switch to confirm the lid is closed before they will spin or drain, and many older top-load models drive the pump directly off the main drive belt, so a broken belt stops both agitation and draining at the same time. Front-load washers use a door latch with its own switch instead of a lid switch, and almost always use a separate electric drain pump motor rather than a belt-driven pump, so a broken drive belt on a front-load washer stops the drum from turning but does not usually stop it from draining.
Diagnostic Order
- Confirm the washer is actually getting to the drain step -- run a drain-only or spin-only cycle if available.
- Check the drain hose for a kink, and make sure it is not pushed too far into the standpipe, which can create a siphon that behaves like a drain failure.
- Open the pump filter access door and clear any debris.
- Test the lid switch or door latch for continuity.
- If the pump filter is clear and the switch tests fine, test the drain pump motor itself for continuity, then check the drive belt on belt-driven models.
Error Codes
- Whirlpool / Maytag: F21 or F02 = long drain / drain failure
- LG: OE = drain error
- Samsung: 5E or SE = drain error
What to Check and How
- Drain pump: Unplug the washer, open the pump filter access door, and remove any debris. If the pump still doesn't run, test the pump motor windings for continuity with a multimeter.
- Lid switch / door latch: Test for continuity with a multimeter while manually pressing the switch -- no change from open to closed means it has failed.
- Drive belt: Open the cabinet per your model's service path and check whether the belt is still looped around the motor and drum pulleys, and whether it is cracked or glazed.
- Control board: Inspect visually for burnt or bulging components; this is normally checked last, after the pump, switch, and belt all test normal.
Related Washer Symptoms
If the washer also won't start at all, see Appliance Won't Start (washer section). If it's leaking instead of just failing to drain, see Appliance Leaking Water (washer section). Other related searches: "washer won't spin," "washer won't agitate," "washer won't fill with water," "F31 error code," and "LE error code."
Preventing Drain Clogs
Empty pockets before every load -- coins, tissues, and small toys are the most common cause of a clogged drain pump filter. Run a monthly maintenance or hot-water cycle with an appliance-safe cleaner to reduce detergent and mineral buildup inside the pump and hose, and check the drain hose for kinks any time you move the washer, since a pinched hose behaves exactly like a clogged pump from the outside. On models with an external filter access door, clean the filter every few months even if the washer seems to be draining fine -- by the time it visibly stops draining, the filter is usually already badly packed.
How to Confirm Before You Buy a Part
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 gets sent back.
- Find the model/serial plate. It is usually inside the door frame, on the back panel, on the door edge, or under a front kick panel, depending on the appliance. See how to find your model number for exact locations by appliance type.
- 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.
- 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 use one body design across many model numbers over several years, and change the exact door switch, 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 -- which is exactly why the full number, not just the brand, is what a parts lookup needs to return the correct result.
Related Symptoms
If this is not quite the problem you are seeing, check the other symptom guides, or browse the full list of 87 repair symptoms.
| Symptom | What it looks like |
|---|---|
| Appliance Won't Start | Powers on but the motor, heater, or cycle never starts |
| Appliance Leaking Water | Water pooling under, inside, or around the appliance |
| Appliance Making Loud Noise | Grinding, squealing, banging, or rattling during a cycle |
| Dryer Not Heating | Dryer runs a full cycle but clothes come out cold and damp |
| Refrigerator Not Cooling | Fridge or freezer temperature is creeping up |
Still not sure? Use the model and part lookup tool to search by your appliance model number directly.