Troubleshooting a Clogged Drain in a Bosch Dishwasher

August 5, 2023
3 mins read
red valve

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Key Takeaways

  • A clogged drain in a Bosch dishwasher can cause issues with the drain cycle.
  • Resetting the dishwasher and pausing the cycle can help resolve minor drain problems.
  • Forcing a drain using vinegar and baking soda or checking for blockages can be effective solutions.
  • Cleaning filters regularly and ensuring the drain valve is functioning properly can prevent future drain issues.
  • Proper loading and attention to the dishwasher while it runs can help maintain optimal drain performance.


A Bosch dishwasher is a convenient and efficient appliance that simplifies the task of cleaning dishes. However, like any other appliance, it may encounter issues from time to time. One common problem that Bosch dishwasher owners may face is a clogged drain, which can disrupt the drain cycle and prevent the dishwasher from functioning properly. In this article, we will explore various troubleshooting methods and solutions to address a clogged drain in a Bosch dishwasher.

Resetting the Dishwasher and Pausing the Cycle

Sometimes, a simple reset can resolve minor drain issues in a Bosch dishwasher. To reset the dishwasher, locate the power button and press and hold it for a few seconds until the dishwasher turns off. Wait for a few minutes, then press the power button again to turn it back on. This reset can help clear any temporary glitches that may be affecting the drain cycle.

Pausing the Cycle

If you notice that the dishwasher is not draining properly during a cycle, you can try pausing the cycle and then resuming it. To pause the cycle, open the dishwasher door and press the “Start” button. Wait for a few seconds, then close the door and press the “Start” button again to resume the cycle. This pause and resume action can sometimes help the dishwasher reset and resume proper draining.

Forcing a Drain

If resetting and pausing the cycle do not resolve the drain issue, you can try forcing a drain using vinegar and baking soda. Start by pouring one cup of vinegar into the bottom of the dishwasher. Then, sprinkle one cup of baking soda over the vinegar. Allow the mixture to sit for about 15 minutes to allow the vinegar and baking soda to work on breaking down any clogs. Afterward, run a hot water cycle to flush out the drain. This method can help dislodge any debris or buildup that may be causing the clog.

Checking for Blockages

Another method to force a drain is to check for blockages in the dishwasher’s drain hose or air gap. Start by disconnecting the dishwasher from the power source and removing the bottom rack. Locate the drain hose, which is usually connected to the sink’s drain or garbage disposal. Check for any kinks, twists, or clogs in the hose. If you find any blockages, use a pipe cleaner or a long, flexible brush to remove them. Additionally, inspect the air gap, which is a small device located on the countertop or sink. Remove the cap and clean out any debris that may be blocking the drain.

Cleaning Filters and Verifying the Drain Valve

Regularly cleaning the filters in your Bosch dishwasher can help prevent drain issues. Start by removing the bottom rack and locating the filters at the bottom of the dishwasher. Remove the cylindrical filter and the mesh filter, then rinse them under running water to remove any food particles or debris. Once clean, reassemble the filters and place them back in the dishwasher. This simple maintenance task can improve the dishwasher’s draining performance.

Verifying the Drain Valve

The drain valve is a crucial component of the dishwasher’s drain system. To verify if the drain valve is functioning properly, you will need to access the dishwasher’s control panel. Consult the dishwasher’s manual or manufacturer’s website for specific instructions on how to access the control panel. Once you have access, locate the drain valve and inspect it for any signs of damage or blockages. If you notice any issues, such as a broken valve or debris blocking the valve, it may be necessary to replace the drain valve to restore proper draining.


A clogged drain in a Bosch dishwasher can be a frustrating issue, but with the right troubleshooting methods, it can be resolved. Resetting the dishwasher, pausing the cycle, and forcing a drain using vinegar and baking soda are effective solutions for minor drain problems. Checking for blockages in the drain hose and air gap can also help dislodge any clogs. Regularly cleaning the filters and verifying the drain valve’s functionality are essential maintenance tasks to prevent future drain issues. By following these tips and paying attention to proper loading and dishwasher operation, you can ensure optimal drain performance in your Bosch dishwasher.

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