Fix the UB Error Code on Your Samsung Front-Load Washer

Quick Answer

A UB code means your laundry is clumped on one side or the machine is tilted. Open the lid, redistribute the wet clothes evenly, ensure the washer is perfectly level on the floor, and press start to resume.

The UB code is basically your machine saying it's about to shake itself apart and needs your help right now. Usually it's just laundry that got clumped up, but if you keep forcing cycles through the error, you'll end up with trashed drum bearings that cost $200-400 to fix. I replaced three Samsung washers last month where the owner kept ignoring UB for months and wondered why their machine sounded like a helicopter. Don't let that be you.

SamsungWasherSeverity: low93% DIY Success

Time to Fix

5–60 min

Difficulty

beginner

Parts Cost

$20 – $35

Tools Needed

Bubble level, Adjustable wrench

What Does the UB Code Mean?

When I walk up to a Samsung showing UB, first thing I do is push on the corners to see if it rocks. These front-loaders are notorious for vibrating badly when they're not dead level on a solid floor. It's rarely a computer glitch. Almost always it's a physical weight problem or worn shocks, and honestly it's probably the most common service call I get on Samsung washers. The good news is this is usually a free fix if you catch it early.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Laundry Distribution Issues55%

Worn Suspension Rods25%

Cabinet Leveling Issues12%

Overloading5%

Mechanical Failure (Balance Ring/Weights)3%

Symptoms You May Notice

Machine runs through the whole wash cycle without a problem, then stops dead mid-spin and throws UB with the drum barely moving.
There's a loud, rhythmic THUD-THUD-THUD during spin, like someone dropped a brick in the drum.
Clothes come out soaking wet because the machine dropped to a slow 400 RPM spin instead of the normal 1000-1200 RPM it needs to actually extract water.
The countdown timer on the display keeps jumping BACKWARD instead of counting down, which is the machine resetting itself to try redistributing the load.
You can literally see the washer rocking or slowly walking away from the wall during the spin cycle.

Can you reset a Samsung washer to clear the UB code?

You don't usually need a hard reset for a UB code. Just opening the door to fix the load clears the error automatically. If the display is still stuck showing UB after you've redistributed the clothes, hold the Start/Pause button for about 3 seconds until the cycle cancels, then select just the Drain and Spin cycle to get the water out first. After that drains completely, restart with your rebalanced load and you should be good to go.

Tools Required for Diagnosis

Bubble levelAdjustable wrenchTorx T20 screwdriverPhillips #2 screwdriverFlashlightWork gloves

Service / Diagnostic Mode

With the washer on, press and hold the 'Delay Gum' and 'Soil Level' buttons (or 'Spin' and 'Soil Level' depending on model) for 3 seconds until the display shows all lights. Turn the dial to 'Spin' to test the unbalanced sensor specifically.

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

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
Shock Dampener (front-load, sold individually)DC66-00470B · $20–$35	DC66-00470B	$20 – $35

Frequently Asked Questions

Why does my Samsung front-loader show UB more than my old top-loader ever did?

Pure physics. A top-loader just lets gravity pull the load straight down, but your front-loader has to physically lift wet laundry to the top of the drum and drop it over and over at 1000+ RPM. At that speed, even a few extra ounces on one side creates massive centrifugal force. Samsung's UB sensor is way more sensitive than what you'd find on a budget machine because the potential for damage is actually higher on these high-spin front-loaders. The machine isn't being dramatic, it's genuinely protecting itself from shaking apart.

Can ignoring UB codes actually damage my washer?

Yes, absolutely. Think of driving a car with a badly unbalanced tire, you'll eventually wreck the struts and wheel bearings. Same exact thing here. On a Samsung front-loader, the rear tub bearing is the most expensive thing in the machine to replace, we're talking $200-400 in parts alone before labor. If you're already hearing a loud roaring sound like a jet engine during spin, that bearing is probably already going. The UB errors are the machine begging you to stop before it gets to that point.

How do I know if my shock dampeners need replacing?

Push down firmly on the inner drum and let go fast. Good shocks snap back and stop almost immediately. If the drum bounces two or more times before settling, those dampeners are worn out. Get a flashlight and check the floor under the machine and the bottom of the cabinet for grease splatter or oil staining, that's a dead giveaway the seals blew. On a machine used daily, I see these wear out somewhere around the five to seven year mark. It's a pretty cheap fix if you catch it before it starts destroying bearings.

What's the difference between UB and UE on Samsung washers?

They're basically the same error, just displayed differently depending on which model you have. Older Samsung front-loaders show UE, newer ones show UB. Both mean unbalanced load. Same diagnosis, same fixes. Some models will actually alternate between showing the code and trying to self-correct before it fully gives up and locks the code on the display. If your manual says UE but your screen shows UB, don't sweat it at all. Same problem, same solution.

My Samsung throws a UB code on almost every single load now. What changed?

When UB goes from occasional to constant, something physical changed in the machine. Most likely the shock dampeners finally gave out, especially if the machine is over 5 years old with daily use. Second most likely: the machine got nudged and isn't level anymore, happens all the time when people clean behind it or move it for a repair. Third possibility is a worn spider bracket or starting drum bearing that's letting the tub wobble even when the load is balanced. Start by checking level and shocks. If both look fine and you're still getting UB on normal balanced loads, that's when you call a tech.

Related Samsung Washer Error Codes

Code: URSamsung Washer UR Error Code: Unbalanced Load (Top Load)Code: UESamsung Washer UE Error Code: Unbalanced Alternate Display

Models Known to Experience UB Errors

This repair applies to most Samsung washers with this error code. Common model numbers include:

WF45R6100AW, WF45T6000AW, WF45R6300AW, WF50R8500AV, WF45H5200AW, WF42H5000AW, WF45R6300AV, WF50T8500AV

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on May 10, 2025