Bosch Dishwasher E22 Error Code

Bosch is a well-known brand in the home appliance industry and has been producing high-quality dishwashers for many years. The Bosch dishwasher is a reliable appliance that can be found in many households. However, like all appliances, the Bosch dishwasher can encounter issues from time to time, and one of the most common issues is the E22 error code.

In this article, we will discuss the Bosch Dishwasher E22 error code in detail, its causes, and how to troubleshoot and fix the issue.

What is the E22 error code?

The E22 error code on a Bosch dishwasher indicates a problem with the water supply system. Specifically, it means that there is a blockage or restriction in the dishwasher’s drainage system, preventing water from flowing out of the machine. This error can cause water to back up into the dishwasher, potentially causing water damage and other issues.

What causes the E22 error code?

The E22 error code is typically caused by a blockage or restriction in the dishwasher’s drainage system. This can be caused by a variety of factors, including:

  1. Clogged drain hose: The drain hose is responsible for carrying water out of the dishwasher and into the home’s plumbing system. If the drain hose is clogged with food particles or other debris, it can cause water to back up into the dishwasher and trigger the E22 error code.
  2. Blocked drain pump: The drain pump is responsible for pumping water out of the dishwasher and into the drain hose. If the drain pump is blocked by food particles, broken glass, or other debris, it can prevent water from flowing out of the dishwasher and trigger the E22 error code.
  3. Damaged drain pump impeller: The impeller is the rotating component of the drain pump that helps to move water through the dishwasher’s drainage system. If the impeller is damaged or broken, it can prevent water from flowing out of the dishwasher and trigger the E22 error code.
  4. Clogged air gap: The air gap is a small device located on the sink or countertop that prevents dirty water from flowing back into the dishwasher. If the air gap is clogged with food particles or other debris, it can prevent water from flowing out of the dishwasher and trigger the E22 error code.
  5. Damaged check valve: The check valve is responsible for preventing water from flowing back into the dishwasher once it has been pumped out. If the check valve is damaged or broken, it can allow water to flow back into the dishwasher and trigger the E22 error code.

How to troubleshoot and fix the E22 error code

If your Bosch dishwasher is displaying the E22 error code, there are several steps you can take to troubleshoot and fix the issue. Here are some of the most common troubleshooting steps for the E22 error code:

Step 1: Check the drain hose

The first step in troubleshooting the E22 error code is to check the drain hose for clogs or restrictions. To do this, you will need to locate the drain hose and inspect it for any visible signs of clogs or damage. If you find a clog, you can try using a wire hanger or plumbing snake to remove the blockage.

Step 2: Check the drain pump

If the drain hose is not clogged, the next step is to check the drain pump for blockages or damage. To do this, you will need to remove the dishwasher’s bottom panel and locate the drain pump. Check the pump for any visible signs of damage or blockages. If you find a blockage, you can try removing it with a pair of pliers or a screwdriver.

Step 3: Check the air gap

If the drain pump is not the issue, the next step is to check the air gap for clogs or restrictions.

. The air gap is a small device that prevents dirty water from flowing back into the dishwasher. To check the air gap, you will need to locate it on the sink or countertop and remove the cap. Use a small brush or toothbrush to clean the air gap and remove any debris that may be causing the blockage.

Step 4: Check the check valve

If the air gap is not the issue, the next step is to check the check valve for damage or blockages. The check valve is responsible for preventing water from flowing back into the dishwasher once it has been pumped out. To check the check valve, you will need to locate it on the dishwasher’s pump housing and remove it. Check the valve for any visible signs of damage or blockages, and replace it if necessary.

Step 5: Call a professional

If none of the above steps resolve the E22 error code, it may be necessary to call a professional appliance repair technician. A professional technician will be able to diagnose and fix the issue quickly and efficiently, saving you time and money in the long run.

Preventing the E22 error code

Preventing the E22 error code from occurring in the first place is always the best course of action. Here are some tips to help prevent the E22 error code:

  1. Keep the dishwasher clean: Regularly cleaning your dishwasher can help prevent clogs and blockages from forming in the drainage system. Make sure to remove any food particles or debris from the dishwasher’s interior after each use.
  2. Use the right detergent: Using the right detergent can help prevent clogs and blockages from forming in the dishwasher’s drainage system. Make sure to use a high-quality detergent that is designed for use in dishwashers.
  3. Load the dishwasher correctly: Overloading the dishwasher can cause clogs and blockages in the drainage system. Make sure to load the dishwasher correctly and avoid overfilling it.
  4. Clean the air gap: Regularly cleaning the air gap can help prevent clogs and blockages from forming in the dishwasher’s drainage system. Use a small brush or toothbrush to clean the air gap and remove any debris that may be causing the blockage.

Clogged Drain Filter

A clogged drain filter can cause a variety of issues with your dishwasher, including the dreaded E22 error code on Bosch models. This error code indicates that there is a problem with the drainage system in your dishwasher, and specifically that the drain pump or discharge hose may be blocked. While this may seem like a complex issue to address, it can usually be resolved by following some simple steps.


Firstly, you should turn off and unplug your Bosch dishwasher before attempting any repairs. Next, locate the drain filter assembly at the bottom of your unit – this will typically consist of three separate parts: the coarse filter, fine filter, and microfilter. Remove each piece carefully and inspect them for any signs of blockages or debris build-up. If you find anything obstructing the filters, such as food waste or small utensils, remove these items using a pair of tweezers or pliers.

Calcium Buildup

The Bosch dishwasher is an excellent appliance that makes cleaning dishes and utensils effortless. However, like any other machine, it may develop faults over time. One of the most common errors experienced by Bosch dishwashers is the e22 error code, which indicates a problem with the unit’s water supply.


Calcium buildup in the filter is one of the leading causes of e22 error code in Bosch dishwashers. The dishwasher relies on clean water to wash dishes effectively. But when minerals such as calcium accumulate in the filter or other parts of the unit, they can clog up and prevent proper water flow. This can lead to poor cleaning results and eventual breakdowns.

To avoid this issue, it’s essential to keep your Bosch dishwasher filter clean at all times. Regular maintenance will help you get rid of any buildup before it becomes a significant problem.

Clogged Circulation Pump

A clogged circulation pump can be a real headache for anyone using a Bosch dishwasher. Not only does it prevent the dishwasher from functioning properly, it also leads to an error code e22 that can be difficult to decipher. The good news is that this issue is relatively easy to fix, as long as you know what you’re doing.


To begin with, it’s important to understand why the circulation pump gets clogged in the first place. This part of the dishwasher is responsible for pumping water through the spray arms and into the tub during a wash cycle. Over time, food particles and other debris can build up in and around the pump, causing it to become blocked. When this happens, water cannot flow through properly and an e22 error code will appear on your machine’s display screen.

What is the Bosch Dishwasher E22 Error Code Mean?

The Bosch Dishwasher E22 error code indicates a water drain issue. This could be caused by a blockage in the drain hose, or an issue with the motor, pump, or filter. To resolve this error code, first check the drain hose for any kinks or blockages that may be preventing the water from draining properly. If there are no visible blockages, then it is likely an issue with the motor, pump, or filter. In this case, you should contact a qualified technician to inspect and repair your dishwasher.

In conclusion, the Bosch dishwasher E22 error code is a common issue that can be caused by a variety of factors, including clogged drain hoses, blocked drain pumps, damaged impellers, clogged air gaps, and damaged check valves. By following the troubleshooting steps outlined in this article, you can quickly and efficiently resolve the issue and prevent it from happening in the future. Remember to always keep your dishwasher clean, use the right detergent, load it correctly, and regularly clean the air gap to prevent clogs and blockages from forming in the drainage system.

Click to rate this post!
[Total: 0 Average: 0]