Home Error Code Fix E25 Error Code Bosch Dishwasher: Troubleshooting and Fixing the Drainage Issue

E25 Error Code Bosch Dishwasher: Troubleshooting and Fixing the Drainage Issue

by Timothy Ginn

The E25 error code on a Bosch dishwasher indicates a draining fault, which can be caused by a blockage in the filter or a failure in the drain pump. To resolve this issue, unplug the dishwasher from the mains, remove the dishwasher trays, and clean the filter with a toothbrush.

Check the dishwasher waste water pump and impeller for any debris and clean as necessary. Additionally, inspect the drainage hose and U bend pipework for blockages. Once complete, plug the dishwasher back in and check if the error code persists.

Table of Contents

Understanding The E25 Error Code

Brief Explanation of the E25 Error Code on Bosch Dishwashers

The E25 error code on Bosch dishwashers is an indication of a drainage issue. When this error code appears, it means that the dishwasher is unable to drain the water properly during the wash cycle or at the end of the program. The error code may show up on the control panel and can be accompanied by a flashing light or beeping sound.

There are several possible causes for the E25 error code, including a clogged filter, a blocked drainage hose, or a faulty drain pump. It is important to address this issue promptly to prevent further damage to the dishwasher and ensure that it continues to function efficiently.

Importance of Addressing the Drainage Issue Promptly

Addressing the drainage issue indicated by the E25 error code promptly is crucial for the proper functioning of your Bosch dishwasher. Ignoring or delaying the resolution of this issue can lead to a number of problems and inconveniences:

  • 1. Inefficient Cleaning: When the dishwasher is unable to drain properly, it can leave behind food debris and residue on your dishes, rendering them poorly cleaned and potentially unhygienic.
  • 2. Odor Build-up: Standing water in the dishwasher can lead to unpleasant odors and a breeding ground for bacteria and mold.
  • 3. Potential Damage: Continued use of the dishwasher without addressing the drainage issue can put strain on the internal components, potentially leading to more serious damage and costly repairs.
  • 4. Energy Efficiency: A dishwasher that is unable to drain properly may require extra cycles or longer run times to compensate, resulting in higher energy consumption and increased utility bills.

By addressing the E25 error code promptly, you can ensure that your Bosch dishwasher continues to function effectively and efficiently, providing you with clean and sanitized dishes. Taking the necessary steps to resolve the drainage issue will not only improve the performance of your dishwasher but also extend its lifespan and save you money in the long run.

Checking The Dishwasher Waste Water Pump And Impeller

Steps to Access the Waste Water Pump and Impeller

If you’re experiencing an E25 error code on your Bosch dishwasher, it usually indicates a problem with the waste water pump and impeller. To resolve this issue, follow the steps below to access the pump and impeller for inspection and possible cleaning or replacement:

  1. Unplug the dishwasher from the mains to ensure your safety.
  2. Remove the dishwasher trays to create enough space for easy access.
  3. Next, locate and remove the filter to expose the waste water pump and impeller.

How to Inspect the Pump and Impeller for Blockages or Damage

Once you have accessed the waste water pump and impeller, it’s important to inspect them for any blockages or damage. Follow these steps:

  1. Thoroughly examine the pump and impeller for any debris, such as food particles or objects that might be causing a blockage.
  2. Using a partner’s toothbrush or a soft brush, carefully clean any visible blockages.
  3. If you notice any damage to the impeller or other parts of the pump, it may be necessary to replace them.

Cleaning or Replacing the Pump and Impeller if Necessary

If the inspection reveals that the pump and impeller are still not functioning properly, you may need to clean or replace them. Follow these steps:

  1. If the pump and impeller are heavily clogged or damaged, it is recommended to replace them with new parts.
  2. Clean the impeller cover and other accessible parts before installing the new pump and impeller.
  3. Ensure that the replacement parts are compatible with your specific Bosch dishwasher model.

Regular maintenance and cleaning of your dishwasher can help prevent issues like the E25 error code. By checking the waste water pump and impeller for blockages or damage, you can ensure that your dishwasher continues to work efficiently and effectively, providing you with clean dishes every time.

Cleaning And Reassembling The Filter

One common issue that Bosch dishwasher owners may encounter is the E25 error code, indicating a draining fault. This error can be caused by various factors, including a blockage in the filter or a drain pump failure. In this section, we will guide you through the process of cleaning and reassembling the filter to address the E25 error code.

Removing the filter from the dishwasher

  1. Start by turning off the dishwasher and unplugging it from the mains.
  2. Open the dishwasher door and remove the dishwasher trays.
  3. Locate the filter assembly, usually located at the bottom of the dishwasher. It is often circular in shape.
  4. Twist the filter assembly counterclockwise and lift it out of the dishwasher.

Proper cleaning techniques for the filter

Once you have successfully removed the filter from the dishwasher, it is crucial to clean it properly to ensure optimal performance. Follow these steps:

  1. Inspect the filter for any visible food debris or residue.
  2. Use a soft brush or your partner’s toothbrush (cleaned, of course!) to gently scrub away any buildup on the filter.
  3. Make sure to clean both the filter assembly and the removable filter basket thoroughly.
  4. Rinse the filter under running water to remove any remaining particles.
  5. Allow the filter to air dry completely before reassembling it.

Reassembling the filter and ensuring it is installed correctly

Now that you have cleaned the filter, it’s time to reassemble it and ensure it is properly installed. Follow these steps:

  1. Place the filter basket back into the filter assembly, ensuring it fits snugly.
  2. Insert the assembled filter back into the dishwasher, aligning the tabs on the filter assembly with the corresponding slots in the dishwasher.
  3. Twist the filter assembly clockwise to secure it in place.
  4. Double-check that the filter is installed correctly by giving it a gentle tug to ensure it doesn’t come loose.

By following these simple steps to clean and reassemble the filter, you can effectively address the E25 error code in your Bosch dishwasher. Regular maintenance and cleaning of the filter will also help prevent future draining issues and ensure your dishwasher continues to function smoothly.

Checking Drainage Hose And U Bend Pipework

When it comes to resolving the E25 error code on your Bosch dishwasher, one of the main areas to check is the drainage hose and U bend pipework. These components play a crucial role in ensuring that water can flow out of the dishwasher properly. If they become blocked or obstructed, it can lead to drainage issues and the triggering of error codes.

Guidelines for checking the drainage hose for any obstructions

To check the drainage hose for any potential obstructions, follow these steps:

  1. Ensure that the dishwasher is disconnected from the mains power supply.
  2. Remove the dishwasher trays to access the internal components.
  3. Locate the drainage hose, which is usually located at the back of the dishwasher.
  4. Inspect the hose for any visible blockages such as food debris or foreign objects.
  5. If any blockages are found, carefully remove them using gloves or a cleaning tool.

Examining the U bend pipework for blockages

In addition to checking the drainage hose, it is important to examine the U bend pipework for any potential blockages. The U bend, also known as the S bend, is designed to prevent odors from entering the dishwasher while allowing wastewater to flow out. Here’s how to inspect the U bend pipework:

  1. Disconnect the dishwasher from the power supply.
  2. Locate the U bend pipework, which is typically found under the sink.
  3. Inspect the pipework for any signs of blockages such as grease or debris.
  4. If any blockages are present, use a cleaning brush or a pipe cleaner to clear them.

Clearing any debris or obstructions in the drainage system

Once you have checked the drainage hose and U bend pipework, it is essential to clear any remaining debris or obstructions in the drainage system. This will help ensure smooth water flow and prevent future error codes. Follow these steps to clear the system:

  1. Reconnect the dishwasher to the power supply.
  2. Run an empty cycle to flush out any remaining debris.
  3. Consider using a dishwasher cleaning agent or vinegar to remove any buildup.
  4. Regularly clean the dishwasher filter to prevent future blockages.

By following these guidelines and thoroughly checking the drainage hose and U bend pipework, you can troubleshoot and resolve the E25 error code on your Bosch dishwasher. Remember to conduct regular maintenance to keep your dishwasher running smoothly and efficiently.

Other Possible Causes And Solutions

If you’re experiencing the E25 error code on your Bosch dishwasher, it indicates a draining fault. While a blockage in the filter or the drain pump failure are common causes of this error, there are other potential factors worth exploring. By identifying and addressing these issues, you can troubleshoot and fix the problem, getting your dishwasher back up and running smoothly. Let’s take a look at some other possible causes and solutions for the E25 error code.

Exploring other potential causes of the E25 error code

While a blocked filter or a malfunctioning drain pump are often the main culprits behind the E25 error code on Bosch dishwashers, there are a few other factors that can contribute to this issue. It’s essential to consider these possibilities in order to effectively troubleshoot and fix the problem:

  • Drainage hose and U bend pipework blockages: Inspect the drainage hose and U bend pipework for any obstructions or clogs. Blockages in these areas can impede proper water drainage, resulting in the E25 error code.
  • Insufficient water supply: Check the water supply to ensure there is adequate water pressure and that the water tap is fully open. Insufficient water supply can prevent the dishwasher from draining properly.
  • Improper installation: If the dishwasher hasn’t been installed correctly, it can lead to drainage issues. Make sure that the installation is in accordance with the manufacturer’s guidelines to avoid potential problems.

Methods to troubleshoot and fix additional drainage issues

If none of the previous causes apply to your situation, you may need to explore other methods to troubleshoot and fix additional drainage issues. Consider the following steps:

  1. Run an empty cycle: Sometimes, running an empty cycle with some dishwasher-safe cleaner can help to remove any residual debris or buildup that may be causing the drainage problem. Follow the manufacturer’s instructions for the cleaner and ensure your dishwasher is empty before running the cycle.
  2. Inspect and clean the drain: Take a closer look at the drain area and remove any visible debris or blockages. Use a soft brush or cloth to clean the area thoroughly.
  3. Check the drain pump: If the drain pump is the suspected culprit, refer to the manufacturer’s instructions or consult a professional to ensure it is working correctly. A faulty drain pump may need to be replaced.
  4. Professional assistance: If you’ve exhausted all troubleshooting options and the E25 error code persists, it may be necessary to seek professional assistance. A qualified technician can diagnose and fix the underlying issues, restoring your dishwasher to proper functioning.

By considering these other potential causes and solutions for the E25 error code on your Bosch dishwasher, you can confidently troubleshoot and address any additional drainage issues. Remember to always refer to the manufacturer’s guidelines and seek professional assistance when needed to ensure a safe and effective resolution.

Tips For Regular Dishwasher Maintenance

Importance of regular maintenance to prevent future drainage issues

Regular maintenance is crucial for keeping your dishwasher running efficiently and preventing future drainage issues. Over time, food particles, grease, and soap scum can accumulate in the dishwasher’s filter and drainage system, leading to clogs and poor drainage. By incorporating regular maintenance into your routine, you can prolong the lifespan of your dishwasher and avoid costly repairs.

Suggestions for maintaining a clean and efficient dishwasher

1. Clean the filter regularly

The filter in your dishwasher helps to trap food debris and prevent it from clogging the drainage system. Make it a habit to clean the filter at least once a month. Remove the filter according to your dishwasher’s manufacturer instructions and rinse it under running water to remove any trapped debris. If necessary, use a soft brush or toothbrush to scrub away stubborn residue. Once cleaned, reinstall the filter back into the dishwasher.

2. Inspect and clean the drainage hose and u-bend pipework

The drainage hose and u-bend pipework are essential components of your dishwasher’s drainage system. Over time, these can become clogged with debris and impede proper drainage. Regularly check for any obstructions or blockages in the hose and pipework. If you notice any buildup, carefully remove it using a pipe brush or a straightened wire hanger. Ensure that the hose and pipework are securely connected to prevent leaks.

3. Run an empty cycle with vinegar

Vinegar is a natural and effective cleaner that can help remove stubborn stains, odors, and buildup from your dishwasher. Pour a cup of white vinegar into a dishwasher-safe bowl or measuring cup and place it on the top rack of your empty dishwasher. Run a hot-water cycle without any dishes. The vinegar will help dissolve grease and soap scum, leaving your dishwasher clean and odor-free.

4. Avoid overloading the dishwasher

Overloading your dishwasher can put a strain on its drainage system and hinder its overall performance. Make sure to follow the manufacturer’s guidelines regarding recommended loading capacities. By allowing sufficient space for water and detergent to circulate, you can ensure that your dishwasher functions optimally and drains effectively.

5. Use a dishwasher cleaning agent

In addition to regular cleaning and maintenance, using a dishwasher cleaning agent can help remove stubborn stains and residue from your dishwasher’s interior. Look for a dishwasher cleaning agent specifically designed to remove mineral deposits, limescale, and grease. Follow the instructions on the product for best results.

6. Schedule professional maintenance

While regular home maintenance can go a long way in keeping your dishwasher in good condition, it’s also important to schedule professional maintenance at least once a year. A professional technician can thoroughly clean and inspect your dishwasher, ensuring that all components are in proper working order and addressing any potential issues before they become major problems.

By following these tips for regular dishwasher maintenance, you can keep your dishwasher running smoothly, prevent future drainage issues, and enjoy clean and spotless dishes every time.

Frequently Asked Questions Of E25 Error Code Bosch Dishwasher

How Do You Force Drain A Bosch Dishwasher?

To force drain a Bosch dishwasher, follow these steps: 1) Unplug the dishwasher from the mains. 2) Remove the dishwasher trays and filter. 3) Check and clean the drain pump and impeller. 4) Clean the filter thoroughly. 5) Put the filter, trays, and impeller cover back into the dishwasher.

Remember to regularly maintain and clean your dishwasher to avoid drainage issues.

How Do You Remove A Bosch Drain Pump Cover?

To remove a Bosch drain pump cover: 1. Unplug the dishwasher from the mains. 2. Remove the dishwasher trays. 3. Take out the filter. 4. Check the dishwasher waste water pump and impeller. 5. Clean the filter. 6. Put the filter back and the trays back.

7. Check drainage hose and U bend pipework for blockages.

Why Won T My Dishwasher Drain Bosch?

The most common reason why your Bosch dishwasher won’t drain is due to food debris clogging the filter or water pump. Regular maintenance and proper cleaning can help prevent this issue. Consider checking the filter and water pump for any blockages.


To address the E25 error code on your Bosch dishwasher, it is vital to follow a few simple steps. Start by unplugging the dishwasher and removing the trays to access the filter. Clean the filter thoroughly and check for any blockages in the waste water pump and impeller.

Additionally, inspect the drainage hose and U bend pipework for any potential clogs. Regular maintenance and careful cleaning will ensure your dishwasher functions flawlessly.

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