Kenmore Washer F21 Error Code: Causes, Cost & Fix

What is the Kenmore Washer F21 error?#

F21 on a Kenmore washer is a long-drain fault: the machine tried to pump out but water left too slowly, so the cycle stalls with water standing in the drum. It is rarely a broken pump — usually something is choking the drain path. The first thing I clear is the drain pump filter behind the lower front panel, which on these Whirlpool-built Kenmores is a coin trap that catches everything from bobby pins to bra wires.

F21 on a Kenmore Washer: likely causes and repair cost#

On a Kenmore Washer, the F21 code signals: long drain time.

Typical professional repair: $100–$250 · Difficulty: moderate · often owner-fixable

Fastest thing to try first: Clean the drain pump filter.

Symptoms that often accompany F21: Rinse water left standing in the drum; The spin step never gets underway; A dank, swampy odor drifting from the door

Technician diagnostic sequence for F21:

1. Access the drain filter behind the bottom front panel
2. Place towels and a shallow pan to catch water
3. Remove filter and clear all debris — coins, hairpins, lint
4. Check drain hose for kinks or check if elevated too high (max 96 inches)

Parts a technician may check or replace: drain pump assembly

Field note: These 110-series Kenmores are Whirlpool-built and hide a coin trap behind the lower front panel that catches everything from bra wires to bobby pins. A pump that howls but moves no water has something wedged in the impeller, so open the pump volute and clear it before condemning the motor.

How to troubleshoot the F21 error yourself#

This is a code most owners can beat themselves, so it is worth an hour before calling in help. Lay down towels and a shallow pan, because the drum still holds water. Open the access behind the lower front panel and reach the drain filter, then remove it and clear every bit of debris — coins, hairpins, lint, the usual haul. While you are in there, check the drain hose for kinks and make sure it is not pushed too high up the standpipe.

If the pump howls but moves no water even with a clean filter, the table above points to something wedged in the impeller, so the pump volute gets opened and cleared before anyone condemns the motor. That deeper pump access, and diagnosing a truly dead pump, is where a technician takes over — but most F21s never get that far.

Is the Kenmore Washer F21 error worth fixing?#

F21 is one of the better-value repairs because the fix is usually cleaning, not parts. The table above lists $100 to $250 for a professional job, but a clogged filter or a coin in the impeller costs nothing to clear yourself. Even if the drain pump has genuinely failed, it is a modest part on a Whirlpool-platform machine and easily worth replacing on a washer in good shape. I would only think replacement if the washer were already old and failing elsewhere.

Kenmore Washer F21: frequently asked questions#

What does the F21 error mean on a Kenmore washer?#

It is a long-drain fault: the pump ran but water drained too slowly to finish in time, so the cycle stops with water left in the drum.

Is it safe to keep using a Kenmore washer showing F21?#

It will not harm anything, but loads sit wet and can turn musty. Clear the drain path before running more washes so water is not left standing repeatedly.

Can I clear the F21 error myself, or do I need a technician?#

Usually yourself: clean the drain pump filter behind the lower panel and check the hose for kinks. Only a pump that still moves no water once clear needs a technician.

How much does it cost to repair F21 on a Kenmore washer?#

The table above lists $100 to $250 for a professional repair, though clearing the filter or impeller yourself often costs nothing.

Which parts usually fail when a washer throws F21?#

Most F21s are a clogged drain filter or an object stuck in the pump impeller rather than a failed part. When a part fails it is the drain pump assembly.

Is a Kenmore washer with F21 worth repairing?#

Yes — it is often a free cleaning, and even a replacement drain pump is inexpensive and worthwhile on a sound machine.

Why does a clogged drain filter trigger F21?#

The control watches how fast the tub empties. A filter packed with lint and coins slows the outflow past the drain timer, so the machine reports F21.