The Electrolux E21 error code indicates a drain timeout. The most common fix is cleaning the drain pump filter located behind the small access door at the bottom front of the machine. This simple maintenance resolves nearly half of all E21 service calls.
E21 basically means the pump ran out of time trying to drain the tub. Ignore it and you'll end up with soaking wet clothes stuck in a machine that won't finish its cycle, or worse, water sitting in there for days starting to smell. I see this code every week. Most of the time it's a gunked-up filter you can clear yourself in five minutes flat.
From a tech's perspective, E21 is a timeout error. The control board gives the pump about eight minutes to empty the tub, and if the pressure sensor still detects water after that, it kills the cycle. I always listen to the pump first. If it's dead silent, we're looking at an electrical failure. If it's humming, something's definitely jammed in the impeller.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Foreign object (sock, bra underwire) inside pump impeller12%
Drain hose standpipe too low causing siphon effect10%
Symptoms You May Notice
The display throws E21 and the cycle stops dead, usually right during the drain or spin phase.
You open the door and there's a full tub of soapy water just sitting there going nowhere.
Clothes come out sopping wet and heavy, like the spin cycle barely happened.
You can hear the pump humming or buzzing at the bottom of the machine, but no water is actually moving out.
There's a gurgling noise from the bottom front of the washer right before the cycle stops cold.
Can you reset a Electrolux washer to clear the E21 code?
Press and hold the Cancel or Start/Pause button for five seconds to clear the display. If the tub's still full of water it won't respond right away, so unplug the machine completely and wait three full minutes. That lets the capacitors on the control board discharge and resets the logic. Just know the code'll come right back if the water still can't get out.
Tools Required for Diagnosis
Phillips #2 screwdriverFlathead screwdriverMultimeter with Ohms settingNeedle-nose pliersShallow baking tray or drip panOld towels or shop ragsFlashlight or headlampPliers for hose clamp
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
ComponentComponent Under Test
Expected Range5–30 ohms
ConditionIf Open (OL) or infinite, replace component.
Replacement Parts
If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.
Part Name
OEM Number
Estimated Price
Drain Pump Assembly134051200 · $35–$70
134051200
$35 – $70
Frequently Asked Questions
How often should I clean the Electrolux drain pump filter?
Every three to four months is the standard answer, but honestly if you've got pets or kids who don't empty their pockets, just do it monthly. It's a five minute job once you know where the door is. I can't tell you how many E21 calls I've been on where that filter hadn't been touched in two or three years. Clean filter means happy pump means no E21. It's the single best thing you can do for this machine.
My Electrolux washer shows E21 but drains slowly, not completely. Is the pump failing?
Slow drain is a warning sign. Partial drainage usually means the filter's about 70% clogged and the pump's working way harder than it should be. That extra effort generates heat, and heat kills motor windings fast. Don't wait on it. Clear the filter now, and if it's been doing this for a few weeks, feel the pump housing after a cycle. If it's hot to the touch, the motor might already be on its way out. A replacement pump is $50-90, which is a whole lot better than a new machine.
Can using too much detergent cause E21?
Yeah, way more common than people think. Electrolux front loaders need HE detergent used sparingly. Too much soap creates foam inside the pump where it's basically just spinning through bubbles instead of water, and it can't move anything. You'll get E21 even though the pump's totally fine. Try a cycle on Rinse and Spin with zero detergent. If it drains clean, that's your answer. Cut your detergent dose in half going forward and you're done.
Where is the drain filter on an Electrolux EFLS washer?
Bottom left corner of the front panel. There's a small rectangular door, maybe two by three inches, that pops open with a flathead or your fingernail. Behind it you'll see a big round cap with a handle on it. Turn it counterclockwise slowly and have something to catch the water. That's the filter right behind that cap. The whole job takes five minutes once you know it's there, and honestly it's kind of satisfying once you see what comes out of it.
The drain pump hums but water won't pump out. What's wrong?
Humming is actually good news because it means the motor's getting power and the windings aren't dead. Almost every time I hear that hum with no drainage, there's something physically jamming the impeller. A coin, a button, chunk of broken plastic. Get the filter cap off and try spinning the impeller blades by hand. If they're locked solid, dig around in there with needle-nose pliers until you find the culprit. Clear it and nine times out of ten the pump starts working again immediately.
How much does it cost to fix an E21 error on an Electrolux washer?
Depends completely on what's wrong. Clogged filter? Costs you zero dollars and fifteen minutes. Kinked hose? Also free. Pump replacement is $50 to $90 for the part, plus an hour of your time if you DIY, or about $150 to $250 total if you call a tech. Control board failures are pretty rare for this specific code but can run $200 to $400 for the part alone. Always start with the free stuff first because it's usually the answer.