Resolving the 4C Error Code on Your Samsung Washer -
Appliance Troubleshooting

Samsung Washer 4C Code: Understanding Causes and Troubleshooting Steps

Written by

Jason Carter

Samsung Washer 4C Code: Understanding Causes and Troubleshooting Steps

Listen up:

If you’ve ever scratched your head staring at a “Samsung Washer 4C Code,” you’re not alone. I’ve been an appliance technician for over a decade, and I can’t tell you how many frantic calls I’ve received about this specific error.

Trust me:

These error codes aren’t just random numbers and letters – they’re your washer’s cry for help.

Here’s the deal:

Knowing the code is just the first step. The real game begins with figuring out what it actually means and how to fix it. That’s where the expertise comes in.

Good news:

I’ve teamed up with Gary Manser, a seasoned pro from Virginia, to guide you through decoding and solving this 4C conundrum.

Let’s get your washer back in action. Shall we?

Samsung Washer 4C Code

What Is the 4C Error Code?

Samsung asserts that the 4C code diagnoses a water supply issue commonly caused by a kinked or clogged water inlet hose. But that’s not all. The hose’s clogged mesh filter, a defective water inlet valve, and a malfunctioning pressure sensor are also potential causes.

Having said that:

Don’t be like this Reddit user who received the 4C code after forgetting to turn on the water faucet. Make sure you double-check.

Then, unplug your washer, wait a few minutes, and turn it back on to reset your washer and clear the error.

Still getting the 4C error code?

Let’s go through four potential causes and explain their respective troubleshooting steps.

Unplug your washer and gear up; let’s get started!

4 Common Causes and Fixes for 4C Code on Your Samsung Washer

Commonly Affected PartsEstimated Cost
Water inlet hose$19 – $50
Inlet hose mesh filter$4 – $15
Water inlet valve$15 – $115
Pressure sensor$13 – $40

1. Kinked or Clogged Water Inlet Hose

Kinked or Clogged Water Inlet Hose Washer
PartWater inlet hose
LocationOn one end, it is attached to the inlet valve from the back of the washer. It is connected to the water supply faucet on the other end.
Ease of troubleshootingEasy
Cost$19 – $50
RepairableYes – if it is clogged or kinked
No – if it is damaged or worn


You already know that the 4C error code indicates an issue with the washer’s water supply. As such, it makes sense for a clogged, kinked, or loosely connected inlet hose to be a likely reason.


Any misposition or obstruction in the hose will hinder the free flow of water from the supply faucets into your Samsung washer.


If you notice that the washer is filling slowly and displaying the 4C error code, you’ll need to inspect the inlet hoses for blockages.

This was the case with this Reddit user, who discovered lodged debris in their Samsung WF45T6000AW/A5 washer’s hot water fill hose.


Another Reddit user noticed his Samsung top load washer would run for 5 minutes before it stopped spinning and started beeping with the error code.

To this end, a participant in the discussion recommended inspecting the hose for kinks.

Gary adds:

“You can go the extra mile and check for cracks, leaks, and a loose attachment to the valve or faucet.”


Here’s how to resolve this issue:

  • Step 1: Carefully move your washer away from the wall for easy access and turn off the water faucet.
Turn Off the Water Faucet
  • Step 2: Gently straighten any kinks or bends.
  • Step 3: Inspect the hoses for leaks, tears, or other signs of physical damage and replace the damaged hose.
  • Step 4: Detach the hoses and flush out any lodged debris with a pressure washer or pipe cleaner.
  • Step 5: Reattach the hoses ensuring they are properly connected to their corresponding water inlet valves and faucets.
Reconnect the Water Inlet Hose
  • Step 6: Turn the water supply back on and run a test cycle to confirm the problem is resolved.

2. Clogged Inlet Hose Mesh Filters

Clogged Inlet Hose Mesh Filters
PartInlet hose mesh filters
LocationThey can be found at the ends of the inlet hoses, where they latch onto the washer and faucet.
Ease of troubleshootingEasy
Cost$4 – $15
RepairableYes – if it is clogged
No – if it is damaged


If the hot and cold water inlet hoses are clear, you’d want to check the mesh screens connected to their ends for clogs.

Like the inlet hoses, these mesh filters build up mineral compounds over time from the hard water supplied to the washer.

As a result:

Your Samsung washer will have trouble receiving water from the fill hoses and will display the 4C error code.


Gary correctly says, “There is only one way to determine whether the mesh filters are clogged.”

“You have to detach the hoses, remove the mesh screens with a plier, and inspect them physically for accumulated gunk.”

Disconnect the Water Inlet Hose

You see:

That’s what this Reddit user did when they found some resin on their Samsung washer’s cold water filter after showing the 4C error code.


Once you’ve confirmed that the mesh filter is clogged, your next step is to unclog it. So, thoroughly rinse the mesh filters under running water or use a cotton swab to clean them.

Clean the Mesh Filter with a Cotton Swab


Reattach the mesh screens and reconnect them to the washer and water supply faucets. When you reset your washer, the error code should vanish.

3. Defective or Blocked Water Inlet Valve

Defective or Blocked Water Inlet Valve
PartWater Inlet Valve
LocationIt is situated behind the washer and is connected to the hot and cold water inlet hoses.
Ease of troubleshootingModerate
Cost$15 – $115
RepairableYes – if it is blocked
No – if it is defective


While the inlet hose is still disconnected, you’d want to inspect the water inlet valve for any blockages or faults.

Yes, the inlet valve can get clogged, and the solenoids can fail electrically, causing your Samsung washer to display the 4C error code.


First, if the washer takes much longer to fill, the valve may be clogged with accumulated debris or limescale.  

Furthermore, Gary adds that if the washer error code pops up at the beginning of the cycle, the valve solenoids are probably defective.

Here’s an example:

Our Facebook community member, Josh, bought a used Samsung WA456DRHDSU/AA-02 washer which started displaying the 4C error code.

He discovered the machine would consistently shut off early into the wash cycle.

Not too long after:

I discovered a Reddit discussion concerning a Samsung WA50R5200AW washer where a contributing user claimed faulty solenoids could be culpable in such a situation.

They suggested observing the error code’s timing after interchanging the valve solenoids.

Upon seeing this, Gary and I agreed with the proposed solution.

In my experience:

If the 4C error code still shows up at the early stage of the cycle, a valve solenoid is likely malfunctioning. 

To confirm, test the solenoids for electrical continuity with a multimeter.


This is how to go about it:

  • Step 1: Disconnect the water inlet hoses from your washer and turn off the faucets.
  • Step 2: Pull your washer forward and unscrew the top panel.
  • Step 3: Detach the water inlet valve by unthreading the wiring.
Remove the Inlet Valve
  • Step 4: Test the solenoids for continuity. If they fail the test, replace the water inlet valve.
  • Step 5: Reassemble your washer, plug the machine back into the power outlet, and run a test cycle to be sure the problem is solved.

4. Malfunctioning Pressure Sensor

Malfunctioning Pressure Sensor Washer
PartPressure sensor
LocationIt is located beneath the top panel, at the side of the washer drum.
Ease of troubleshootingModerate
Cost$13 – $40
RepairableYes – if the hose is poorly connected or clogged.
No – if it is malfunctioning


Although Samsung suggests the most common cause of the 4C code is a blocked or kinked inlet hose, user experiences say something different.

Hear it from a victim:

This Reddit user posted about their 2-year-old Samsung WA45N7150AW/A4 washer, which kept throwing the 4C code.

Another user explained that the washer typically displays this code when it cannot detect a water level increase within a particular time slot.

Gary pipes in:

“It uses the hose connected to the pressure sensor to make these measurements. So, if the sensor or hose is malfunctioning, the control board will detect a false water supply error.


How can you tell your pressure sensor is faulty?

According to this Reddit user, the pressure sensor is problematic if you receive the 4C code even though your washer fills properly.

Usually, it would fill halfway and then attempt to add little water every 10 – 20 seconds before showing the 4C error.


This is all speculative. The sure-fire way to know it’s faulty is to test the sensor for electrical continuity.

As for the pressure hose:

I found another Reddit user who replaced their Samsung WF45K6200AW/A2 washer’s pressure hose and sensor.

Gary asserts that the hose likely had micro-holes or small tears that confused the pressure sensor, thereby setting off the 4C code.


Follow these steps to rectify the issue:

  • Step 1: Unscrew the top panel of your Samsung washer.
  • Step 2: Locate the pressure sensor at the side of the washer.
  • Step 3: Search beneath the switch for a pair of plastic teeth and squeeze to release the switch.
Malfunctioning Pressure Sensor Washer Replacement 1
  • Step 4: Disconnect the electrical connections attached to the pressure sensor.
Malfunctioning Pressure Sensor Washer Replacement 2
  • Step 5: Inspect the sensor and pressure hose for physical damage and clogs.
Malfunctioning Pressure Sensor Washer Replacement 3
  • Step 6: Blow air firmly into the hose attached to it to clear out the obstructions, and replace it if you detect air leaks.
  • Step 7: Test the pressure sensor for electrical continuity and replace it if it fails this test.

Models Most Affected

Understand that:

Certain Samsung models are more prone to water supply problems that invoke the 4C error code.

In light of this:

I have curated a list of commonly affected models, their model numbers, and the specific defect causing the error.

Here you go!

Model NumberModel NameReason
WA50R5200AWSamsung Active WaterJet Top Load WasherDefective or Blocked Water Inlet Valve
WA45N7150AW/A4Samsung Active WaterJet Top Load WasherMalfunctioning Pressure Sensor
WF45T6000AW/A5Samsung Front Load WasherKinked or Clogged Water Hose
WD90J6A10AXSamsung Ecobubble Front Load WasherMalfunctioning Pressure Sensor
WF45K6200AW/A2Samsung AddWash Front Load WasherMalfunctioning Pressure Sensor
WF45K6500AV/A2Samsung Smart Front Load WasherKinked or Clogged Water Hose
WA456DRHDSU/AA-02Samsung Top Load WasherDefective or Blocked Water Inlet Valve


In a nutshell:

Your Samsung washer displays the 4C error code because of a water supply issue. And to clear this code, you must solve the underlying problems that set it off.


These problems are not difficult to address as they typically involve replacing or repairing faulty components such as:

  • Kinked or clogged water inlet hose
  • Clogged inlet hose mesh filters
  • Defective or blocked water inlet valve
  • Malfunctioning pressure sensor


Though unlikely, some users may be unable to handle some of these repairs alone.

If you fall into this category, feel free to use our Ask the Expert feature for tailored troubleshooting assistance.

In addition:

Gary encourages adopting a regular appliance maintenance routine. He advises, “Stop waiting for your washer to fail before you service it. Take preventive measures!


I want to hear from you. Please give me feedback on your troubleshooting experience in the comment section below.

Leave a Comment