[FIXED] Samsung Washer SUD Error Code – Causes and Solution

Samsung washers come with a digital display that displays various error codes when the machine malfunctions. The Samsung Washer SUD Error Code means that suds exceed the drum’s normal level.

Many times people misread it as 5UD, but it is the same as the SUD error. Unlike other error codes, this code is not due to the washer’s malfunction but due to using the incorrect type of detergent or using an excessive detergent quantity.

This article will explain what type of detergent you should use and how much you use. Please read the below tips to avoid the SUD error.

What Causes Samsung Washer SUD Error Code?

Samsung Washer SUD Error Code

The 5UD or SUD code indicates that there are excessive soap suds in the washer drum. You may have either used too much or the wrong type of detergent.

The excessive foam will not allow the Samsung washer to run correctly. So, as a precaution, the washer will stop till the suds reduce and run again from where it stopped. In some machines, a foam sensor detects the formation of excessive SUDS.

In most cases, you don’t have to do anything. Just wait for some time, and the error will go away automatically.

What Is HE Detergent?

HE or High-efficiency detergents are designed so that they produce low suds, and at the same time, they quickly clean the clothes in low water volume machines.

The HE detergents hold soil in suspension to not deposit into the clothes when water is low.

In the past, the washing machines use to take up to 40 gallons of water per cycle. More water means more detergents.

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But as technology advances, newer washer models are now only using 11-12 gallons of water per wash. So, if you use more detergent, then it will result in the formation of more suds.

So, now you know that HE means high-efficiency and you should use it in low quantity.

Also, HE detergents come in 1X, 2X, and 3X. The X indicates the concentration. The higher the X, the less quantity you are going to for washing.

Please read the instruction manual when using a washer and add only the correct amount of detergent.

Why Excessive SUDS causes Error?

The Samsung Washer SUD error code is due to the formation of too much suds inside the drum.

People usually see the suds and think the more it is; the better washing will be. But sadly, it is not the case.

In fact, Excessive suds can cause your clothes to smell and provide an ideal environment for mold development. So, your clothes will be smelly and will not look clean when you take them out of the Samsung Washer.

How to reset the Samsung Washer SUD Error Code

The SUD error is not a real error but just an indication that there is a formation of excessive suds, and the machine will wait for some time and resume the operation once the suds reduces.

You can also run an empty wash cycle by selecting a long wash cycle along with the highest temperature settings. This will help in removing the SUDS.

Also, carefully read the manufacturer’s manual to know the correct amount of detergent to use.

We recommend using HE detergent with higher X. These detergents have low sudsing properties and prevent SUD/5UD error.

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What If The SUD Code Still Displays?

If you are still getting the error, then there may be clogging in the drain filter or drain hose.

Clean the drain filter under the sink and remove any particles or heavy soap residue to resolve the SUD error.

Also, open the Samsung washer’s bottom panel and drain out excess water from the drain hose. Check for any clogging in the hose and remove any blockages from the pipe.

Sometimes clogging in the drain hose can cause the SUD code, so it is better to clean the drain hose and other connecting hoses.

Faulty Foam Level Sensor

If you still get the error, then you may have to check the foam sensor. You can read the owner’s manual to locate and fix the sensor.

If you are still getting the Samsung Washer SUD error code, then this can be due to the faulty foam level sensor. Please note that it is not available in all Samsung Washer. So check your owner’s manual to see if it has a foam sensor. 

In some washers, the water level sensor (also known as pressure switch) also works like a foam level sensor. We recommend replacing the faulty sensor with a new one.

  1. Switch OFF the power supply to the Samsung Washer.
  2. Unplug the washer.
  3. Carefully remove the top lid.
  4. Locate the foam/water level sensor. It is usually at the top corner of the washing machine.
  5. Remove it and replace the sensor.


In a few cases, the SUD error is due to the clogging in the water hose or the waterline. To fix the error, you need to remove all the particles stuck inside the hose.

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Disconnect the water hose from the washer and use a vacuum or a cleaning wire to clean it.

How To Prevent The Samsung Washer SUD Error Code

As we have mentioned, It is not a malfunction but only an indication that the washer will wait for some time till the SUD reduces. You don’t have to do anything.

So do not panic, and you also don’t have to call for a repairman. Just wait and watch. Calling a maintenance specialist will waste your time and money.

Only when the error does not go away for a long time should you call the repairman and ask them to inspect the parts such as the foam level sensor and drain hose.

Samsung washer is a very smart machine and has an auto error fix built inside it. It will show the error till the excess suds are not there. After that, it will allow you to use the washer again.

To avoid this error, we recommend using HE detergent and that too in an appropriate quantity. Please read the manual to know how much detergent you should use for your particular washer.

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