Common Causes why is the Bosch dishwasher not draining

Bosch Dishwasher Not Draining

Buying a Bosch Appliance is a great idea since the company creates some of the top appliances for home use. With that in mind, even the best products on the market can sometimes malfunction, and that’s the case here too. The Bosch dishwasher not draining problem is something rather common especially if you already had the unit for a while. Which brings the question, what leads to the drainage issues and how can you solve them? Let’s find out.

Why is the Bosch dishwasher not draining?

There are many different reasons behind the Bosch dishwasher not draining. The most common one is that your dishwasher has food debris clogged in the water pump or the filter. When that happens, water is unable to drain properly and you will encounter water accumulation inside the unit. That becomes a major issue, and certainly something you want to address as quickly as possible.

The best thing you can do is to perform regular maintenance for your Bosch dishwasher. On top of that, cleaning it properly every month, maybe 2 times a month will help quite a bit. The idea is to prevent food accumulation, and proper cleanup can indeed help you achieve that. It might not seem like a lot at first, but the benefits can be amazing and that’s what you want to pursue here.

Bosch Dishwasher

How do you know that the Bosch dishwasher has drainage issues?

Generally, you will notice water accumulation and the unit might also show some warnings too. While it depends on the Bosch dishwasher model you have, you will notice quite easily that something is wrong, and that you need to address the issue as fast as possible before things get any worse. And that’s why it makes a lot of sense to understand the process and focus on the best experience.

What can you do once you encounter the Bosch dishwasher not draining?

Dishwasher check the pump and filter

  • The first thing you want to do is to check the pump and filter. That way you can see what’s wrong and how bad the situation really is. You want to remove the filter, the dishwasher manual has all the information and guidelines you need to do that properly.

  • Once you do so, you will need to check and see if any objects or debris are trapped in the filter. Remove those as quickly as possible. You can also clean the filter region with a soft brush and soap. Do that under running water, as it will help clean everything properly and it will also test the drainage system as well, so it’s a very good idea to do so.

  • Don’t reinstall the filter yet, though. Instead, you want to remove the pump cover simply by following instructions found in the owner manual. As we said, the pump is another place where you can find debris and food accumulation. What you want to do is to check the pump and see if there’s any debris. Standing water can also be an issue. Some of the debris might be sharp, so you need to take good care of that and prevent any issue.

  • Once you finish all these tasks, you can reinstall both the filter and pump cover. Then you can test out the Bosch dishwasher and see if it works properly. Usually this is the best and most efficient way to solve this Bosch dishwasher not draining issue, and it won’t really take a lot of time either. The dishwasher does a very good job at letting you know something is wrong, plus the water accumulation and other factors like that will certainly show there are issues you need to tackle quickly.

Check the air gap

Bosch Dishwasher E24

When you have the Bosch dishwasher not draining problem, the air gap is usually one of the place where you should be looking for solutions. The reason is simple, the air gap is where small bits of food accumulate all the time, so that’s certainly a thing to address as quickly as possible. The air gap is a cylinder or hood at the back of the unit. Remove the cover and then remove the small piece at the top. Then you can clear all the debris and food pieces, which will help prevent any possible problems that can sometimes arise.

Is the drain line clogged?

Sometimes the Bosch dishwasher not draining issue appears because the drain line is clogged. Needless to say, that can be an issue and something you want to address right away. You do want to check and see if the drain line is connected properly or not. It might not seem like a major issue at first, but this can be a severe issue that you do need to address properly. And once you do that, things will become a whole lot better.

What you can do in this situation is to remove the drain hose and clear it properly. As you do that, you also want to clean the fittings near the garbage disposal, while your hose is also disconnected. That way you will be certain that there’s no blockage. Once you finish, you can put it back and you will be good to go.

Bosch dishwasher not draining E24 error

The E24 error code will appear whenever the Bosch dishwasher is not draining properly. The error is particularly showing that the drain filter is blocked. There are many different reasons here, maybe the drain hose is blocked, the filter might need cleaning, or the knockout plug was not removed from the garbage disposal. Once you solve the issue you need to reset the dishwasher, thankfully every Bosch dishwasher manual will give you complete details and guidelines on how to achieve that.

If you have the Bosch dishwasher not draining E24 error code, what you can do is to check the inlet hose and see if there’s any damage done to it or not. You can also check the siphon connection, here you want to see if everything is sealed and that there are no issues. Sometimes the Bosch dishwasher not draining E24 issue is caused because the pump cover is loose.

When that happens, the best thing that you can do is to find the pump cover, usually it’s under the filter. After you find it, all you have to do is to check and see if it’s loose. In case it’s loose, then you do need to screw it in properly just to avoid any issues. That’s what will help provide an exceptional set of results, and the value as a whole is nothing short of impressive. You can check the owner manual for more info about the pump cover, its location and how to remove it.

Bosch Dishwasher E24


The Bosch dishwasher not draining problems are solvable, so the first thing you want to do is to calm down and assess the main reasons why there might be drainage problems. Reading the user manual is also helpful, since it will help guide you through the most common issues that can appear. One thing is certain, these tips and ideas listed above will help solve any Bosch dishwasher not draining issue you might have. Avoid any rush, follow the instructions and check the Bosch dishwasher manual, then you will have access to all the info you need!

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