Kenmore Washer F28 Error Code: Causes, Cost & Fix

What is the Kenmore Washer F28 error?#

F28 on a Kenmore washer means corrupted data is crossing the link between the two control boards — they are talking, but the message arrives scrambled, so the washer quits at random or shows garbled faults. It is a frustrating, intermittent code rather than a dangerous one. The first thing I do is reseat the ribbon between the boards, because on these Whirlpool-platform machines a loose serial connector is almost always the start of it.

F28 on a Kenmore Washer: likely causes and repair cost#

On a Kenmore Washer, the F28 code signals: corrupted data on the board-to-board link.

Typical professional repair: $175–$400 · Difficulty: hard · usually a technician job

Symptoms that often accompany F28: The washer quits partway through at random; A different fault code turns up on each run; The display flickers or paints corrupted data

Technician diagnostic sequence for F28:

1. Pull the plug for a few minutes so both processors cold-boot and shed a transient bus glitch
2. Unclip and re-home the ribbon bridging the two boards, feeling each end snap fully seated
3. Brighten the connector fingers and wipe away any green film that lets a data line drop out
4. When the loom checks clean, swap the central control first, since it garbles the bus more often than the motor unit

Parts a technician may check or replace: central control unit; motor control unit

Field note: Both are Whirlpool-platform 110-prefix faults, but where the no-comms cousin means silence on the bus, this one means the boards are talking yet the data arrives scrambled. That pattern almost always starts at a loose serial connector, so reseat the CCU-to-MCU cable before suspecting either board.

How to troubleshoot the F28 error yourself#

Begin with a reset, since a transient bus glitch can clear on its own. Unplug the washer for a few minutes so both processors cold-boot, then restore power and run a cycle. If F28 keeps returning — often with a different fault code each run — the useful home steps are done, because the fix lives on the connectors between the boards inside the console.

From there a technician does what the table above lays out: unclip and re-home the ribbon bridging the two boards until each end snaps fully seated, brighten the connector fingers and wipe away any green corrosion film that lets a data line drop, and only then swap the central control, which garbles the bus more often than the motor unit. Because the culprit is usually a loose or corroded connector rather than a dead board, reseating that cable is the real fix — and it is inside-the-panel work, not a DIY job.

Is the Kenmore Washer F28 error worth fixing?#

F28 spans a wide cost band because it depends on whether it is a connector or a board. The table above lists $175 to $400 for a professional repair; a reseated, cleaned connector sits at the bottom of that, while a replaced central control unit reaches the top. On a sound washer I always push to exhaust the connector fix first, since it is cheap and usually enough. If it truly needs a board and the machine is already aging, that high-end cost starts to rival a replacement.

Kenmore Washer F28: frequently asked questions#

What does the F28 error mean on a Kenmore washer?#

It means the data crossing the link between the two control boards is arriving corrupted. The boards are communicating, but the garbled bytes make the washer quit or show random faults.

Is it safe to keep using a Kenmore washer showing F28?#

There is no hazard, but the washer is unreliable — it stops partway and throws inconsistent codes. It is fine to leave off until the connectors are reseated.

Can I clear the F28 error myself, or do I need a technician?#

Try a few-minute unplug to clear a transient glitch. If it returns, a technician needs to reseat and clean the board-to-board ribbon, which is inside the console.

How much does it cost to repair F28 on a Kenmore washer?#

The table above lists $175 to $400. A cleaned, reseated connector is at the low end; a replaced central control unit reaches the high end.

Which parts usually fail when a washer throws F28?#

It is usually a loose or corroded serial connector between the boards rather than a part. When a board is at fault it is most often the central control unit.

Is a Kenmore washer with F28 worth repairing?#

Yes when it is a connector fix, which is cheap. If it needs a control board at the top of the range on an older washer, weigh that against replacement.

Why does garbled board-to-board data trigger F28?#

The two boards exchange data over a serial line. A loose or corroded connector lets bits drop or scramble in transit, so the control receives corrupted data and reports F28.