Unlocking Samsung Dishwasher Diagnostic Mode: A Handy Guide

Does your Samsung dishwasher exhibit strange behavior or error codes? Don’t panic – there’s an easy way to identify the problem. By unlocking the diagnostic mode on your dishwasher, you can troubleshoot and diagnose most issues.

In this section, we’ll provide you with a step-by-step guide on how to unlock the Samsung dishwasher diagnostic mode. We’ll also cover some of the most common dishwasher troubleshooting scenarios and the diagnostic codes you may encounter.

Key Takeaways:

  • Unlocking the diagnostic mode on your Samsung dishwasher can save you time and money on repairs.
  • Understanding common error codes and troubleshooting techniques can help diagnose most issues.
  • The diagnostic mode provides you with access to all the necessary information to pinpoint specific issues and perform repairs or maintenance.
  • Regular maintenance and care for your dishwasher are crucial for optimal performance and preventing future issues.
  • If you encounter a problem beyond your expertise, don’t hesitate to seek professional assistance from a dishwasher repair service.

Understanding Samsung Dishwasher Error Codes

Before diving into the diagnostic mode, it’s essential to understand the different error codes your Samsung dishwasher may display. These codes help diagnose issues and guide necessary repairs. Here are some of the most common Samsung dishwasher error codes and their corresponding meanings:

Error CodeMeaning
5CThe water level sensor has failed.
4EThe dishwasher isn’t filling with water.
0EThe dishwasher isn’t draining correctly.
9EThe electronic control board has malfunctioned.

When you encounter an error code on your Samsung dishwasher display, take note of the code and refer to your user manual to determine the meaning and what action to take next. If the error persists, you can try resetting the dishwasher by turning off the power and turning it back on after a few minutes. If the problem persists, it’s time to access the diagnostic mode.

Understanding Samsung Dishwasher Error Codes

“When seeing an error code on your Samsung dishwasher, don’t panic. These codes are helpful tools to diagnose and resolve issues efficiently.”

Keep reading to learn how to access the diagnostic mode and troubleshoot your Samsung dishwasher further.

How to Enter Diagnostic Mode on a Samsung Dishwasher

If you’re experiencing issues with your Samsung dishwasher, entering diagnostic mode can help you identify the problem. Here are the steps to enter diagnostic mode on your Samsung dishwasher:

  1. Turn off the dishwasher and disconnect it from the power source.
  2. Wait for 10-15 seconds before plugging it back in.
  3. Press the “Heavy” and “Delicate” buttons simultaneously and hold them for 3 seconds.
  4. Release the “Heavy” and “Delicate” buttons and press the “Normal” button once. The dishwasher will now enter the diagnostic mode.

Once you have successfully entered diagnostic mode, a code will appear on the dishwasher’s display panel. Refer to the user manual or the Samsung website to understand what the code means. This will help you to diagnose the issue with your dishwasher.

If the above steps don’t work for your particular dishwasher model, consult the user manual or the Samsung website for specific instructions.

“Remember to turn off and disconnect the dishwasher before attempting to enter the diagnostic mode.”

Now that you have successfully accessed diagnostic mode, you can perform a variety of tests to help identify the issue with your dishwasher. Refer to the user manual or the Samsung website to understand the functions available in diagnostic mode.

Next, we’ll explore common dishwasher problems and how to troubleshoot them.

Troubleshooting Common Dishwasher Issues

Samsung dishwasher repair

Dealing with a dishwasher that is not working can be a frustrating experience. Fortunately, many common dishwasher issues can be identified and resolved. In this section, we will guide you through dishwasher troubleshooting techniques for common problems.

Dishwasher not working at all

If your Samsung dishwasher is not working at all, there may be a problem with the power supply. Start by making sure the dishwasher is plugged in and the circuit breaker has not tripped. If the dishwasher is receiving power but still not working, there may be an issue with the door latch or control panel. Check the door latch for any damage or debris that may be preventing it from closing properly. If the door latch is in working order, the control panel may need to be replaced.

Dishwasher not cleaning dishes properly

If your dishwasher is not cleaning dishes properly, there may be a problem with the spray arm or the dishwasher’s water supply. Check the dishwasher’s spray arm for any cracks or clogs that may be preventing it from spinning freely. If the spray arm is in good condition, check the dishwasher’s water supply by running the faucet nearest to the dishwasher and verifying proper water pressure. If the water pressure is low, there may be a problem with the water supply or the dishwasher’s inlet valve.

Dishwasher not draining

A dishwasher that is not draining properly may have a clogged drain or a faulty drain pump. Start by checking the dishwasher’s drain for any clogs or blockages. If the drain is clear, locate the drain pump and check for any damage or debris. If the drain pump is in working order and there are no clogs in the drain, there may be an issue with the dishwasher’s control board.

Dishwasher making strange noises

If your dishwasher is making strange noises during operation, there may be an issue with the dishwasher’s motor or pump. Start by checking for any debris or foreign objects that may be obstructing the dishwasher’s motor or pump. If the motor and pump are clear of debris, the dishwasher’s bearings or other internal components may need to be replaced.

No matter the issue, Samsung dishwasher troubleshooting can be done independently with precautionary measures. However, for complex dishwasher repairs and solutions, you might need professional help. In the next section, we will guide you on when to call a dishwasher repair service.

Utilizing the Samsung Dishwasher Diagnostic Mode

Samsung dishwasher diagnostic mode image

Now that you have successfully entered the diagnostic mode, you can take advantage of the various tests and functions available to troubleshoot your dishwasher’s issues. Here are some helpful tips:

Test Mode

The test mode allows you to perform tests on specific parts of your dishwasher. To access the Test Mode, select and hold the ‘Heavy’ and ‘Delicate’ buttons for three seconds. Once activated, you can scroll through different tests by pressing the ‘Heavy’ and ‘Delicate’ buttons. Use the ‘Start’ button to start the test and the ‘Power’ button to exit the test mode.

Calibration Mode

The Calibration Mode is used to calibrate the dishwasher’s components, such as the water level sensor, temperature sensor, and so on. To access Calibration Mode, press the ‘Normal’ button, followed by the ‘Start’ button. Once activated, Calibration Mode runs automatically. To exit Calibration Mode, press the ‘Power’ button.

Error Code Check

If an error code appears on the dishwasher’s display, the diagnostic mode can provide more information about the problem. By selecting the ‘Smart Auto’ button, you can view any stored error codes on the dishwasher’s memory. This information is useful when calling for support or performing DIY repairs.

Tip: It is important to read the user manual carefully to ensure troubleshooting is performed safely. If you are unsure about performing any test or repair, it is recommended to seek professional help.

By utilizing the features available in the Samsung Dishwasher Diagnostic Mode, you can identify and troubleshoot any issues with your dishwasher more effectively. Remember to follow proper safety instructions and guidelines when performing any repair or maintenance tasks.

Understanding Dishwasher Diagnostic Codes

dishwasher diagnostic codes

As we discussed earlier, your Samsung dishwasher may display various diagnostic codes when in diagnostic mode. It’s important to understand what these codes mean, as they can provide valuable insights into the specific issues affecting your dishwasher.

Here is a table of some common Samsung dishwasher error codes and their meanings:

Diagnostic CodeMeaning
LCLeakage detected
HEError with the heating system
5CWater is not draining properly
OEWater is not draining at all

It’s important to note that these codes are not comprehensive, and your specific model may have additional codes. Always refer to your user manual for a complete list of error codes and their meanings.

If you encounter a diagnostic code, refer to your user manual for specific instructions on how to address the issue. In most cases, the diagnostic code will correspond to a specific component or part of your dishwasher, allowing you to focus your troubleshooting efforts and resolve the problem more efficiently.

Remember, if you are unable to resolve the issue on your own or the problem persists after attempting troubleshooting, it may be time to seek professional assistance from a dishwasher repair service.

Maintaining and Caring for Your Samsung Dishwasher

Dishwasher maintenance

Regular maintenance is crucial to ensure the longevity and optimal performance of your Samsung dishwasher. Here are some useful tips and guidelines for maintaining and caring for your dishwasher:

Clean the filtersEvery 2-3 monthsRemove and clean the filters in the dishwasher according to the manufacturer’s instructions. This prevents the buildup of food debris and ensures efficient cleaning.
Check for leaksMonthlyInspect the dishwasher for any leaks. Look for water stains around the dishwasher, on the floor, and underneath the sink. If you notice any leaks, address the issue immediately to prevent water damage.
Run hot water before starting the dishwasherEvery timeRun hot water at the sink before starting the dishwasher. This ensures that the dishwasher fills with hot water, which is necessary for effective cleaning.
Use the right detergentEvery timeUse detergent specifically formulated for dishwashers. Do not use regular dish soap, as it can cause excessive suds and damage your dishwasher.
Run a cleaning cycleEvery 3-6 monthsRun a cleaning cycle with a dishwasher cleaner to remove any buildup and keep your dishwasher smelling fresh.

By following these maintenance practices, you can prevent future issues with your Samsung dishwasher. However, if you do encounter any problems, the diagnostic mode is a useful tool for troubleshooting. Refer to our previous sections for more information on Samsung dishwasher diagnostic mode and troubleshooting techniques.

Professional Help: When to Call a Dishwasher Repair Service

While it’s possible to troubleshoot and resolve many dishwasher problems on your own, there may come a time when you need to call in a professional for dishwasher repair. Here are some signs that indicate it’s time to seek professional help:

  • Your dishwasher is not draining or draining slowly, despite attempts to unclog the drain or hose.
  • You hear strange noises coming from the dishwasher during operation.
  • The dishwasher is leaking water, and you cannot locate the source of the leak.
  • Your dishwasher displays repeated error codes that you cannot diagnose or fix.
  • You have attempted DIY repairs, but the problem still persists.

When selecting a dishwasher repair service, look for a provider with experience repairing Samsung dishwashers. You can also search online for customer reviews and ratings to ensure you’re choosing a reputable company.

Remember to ask for an estimate before agreeing to any repairs, and be wary of any repair service that requires significant upfront payment.

Tip: Regular maintenance and cleaning can help prevent many dishwasher problems from occurring in the first place. Refer to the previous section for tips on maintaining and caring for your Samsung dishwasher.

If your dishwasher requires repair, do not delay in calling a professional. Putting off repairs can result in further damage to your dishwasher, increasing the cost and complexity of repairs in the long run. By acting quickly, you can restore your dishwasher’s functionality and prevent future issues.


Congratulations! You have now unlocked the Samsung dishwasher diagnostic mode and learned valuable troubleshooting techniques to resolve common dishwasher issues. By utilizing the available tests and functions in the diagnostic mode, you can diagnose and fix problems with ease. Remember to regularly maintain and care for your Samsung dishwasher to prevent future issues. However, if you encounter a complex problem that is beyond your expertise, don’t hesitate to seek professional help.

We hope this article has been helpful in guiding you through Samsung dishwasher troubleshooting and repair. Following the steps outlined in this article, you can enjoy the convenience of a fully functional dishwasher once again. Don’t hesitate to refer back to this article if you encounter any issues in the future. Thank you for reading!


How do I unlock the diagnostic mode on my Samsung dishwasher?

To unlock the diagnostic mode on your Samsung dishwasher, follow these steps:
1. Turn off the dishwasher and unplug it from the power source.
2. Press and hold the “Start” button while plugging the dishwasher back in.
3. Continue holding the “Start” button until the display shows “d:00”.
4. Release the “Start” button, and you will now be in diagnostic mode.

What are the most common error codes in Samsung dishwashers?

Some of the most common error codes in Samsung dishwashers include:
– 1E: Water Inlet Error
– LE: Leakage Error
– HE: Heater Error
– OE: Water Overflow Error
– E2: Motor Error
– DE: Door Error
– CE: Communication Error
– FE: Fill Error
– UE: Unbalanced Load Error
– PE: Power Error

How can I troubleshoot common issues with my dishwasher?

Here are some troubleshooting steps for common dishwasher issues:
1. Check the power supply: Ensure that the dishwasher is properly plugged in and the circuit breaker is not tripped.
2. Clean the filters: Remove and clean the filters to ensure proper water flow.
3. Check for clogs: Inspect the drain hose and spray arms for any obstructions.
4. Test the door latch: Make sure the door latch is securely closed and aligned.
5. Reset the dishwasher: Turn off the dishwasher and unplug it for a few minutes before plugging it back in and restarting it.
6. Consult the user manual: Refer to the user manual for specific troubleshooting steps for your dishwasher model.

How can I make the most out of the diagnostic mode on my Samsung dishwasher?

In the diagnostic mode, you can perform various tests and functions to identify and address issues with your dishwasher. Some of the tests you can run include checking the water inlet valve, testing the drain pump, and calibrating the sensors. By utilizing these tests and functions, you can pinpoint the root cause of any problems and take appropriate action.

What do the dishwasher diagnostic codes mean?

Dishwasher diagnostic codes indicate specific issues or errors with different parts or components of your dishwasher. These codes help you identify the problem quickly and efficiently. For example, an error code related to the water inlet valve may indicate a problem with water supply, while a code related to the drain pump may suggest an issue with draining. Refer to the user manual for a comprehensive list of diagnostic codes and their meanings.

How can I maintain and care for my Samsung dishwasher?

To maintain and care for your Samsung dishwasher, follow these tips:
1. Clean the filters regularly: Remove and clean the filters every few months to prevent clogs and ensure optimal performance.
2. Check for leaks: Inspect the dishwasher for any leaks and address them promptly.
3. Use proper detergent: Use dishwasher detergent specifically designed for use in dishwashers to avoid damaging the appliance.
4. Load the dishwasher correctly: Arrange the dishes properly and avoid overcrowding to ensure efficient cleaning.
5. Clean the spray arms: Remove and clean the spray arms to prevent buildup and maintain effective water distribution.
6. Run regular maintenance cycles: Periodically run maintenance cycles recommended by the manufacturer to keep the dishwasher clean and fresh.

When should I call a dishwasher repair service?

If you encounter complex issues with your dishwasher or if DIY troubleshooting does not resolve the problem, it is recommended to call a dishwasher repair service. Some signs that indicate the need for professional assistance include persistent error codes, major leaks, unusual noises, and complete dishwasher failure. Professional technicians have the expertise and tools to diagnose and repair more complicated issues, ensuring the safety and proper functioning of your dishwasher.