Error E20 on a Bosch dishwasher

You’re not the only one whose Bosch dishwasher is displaying the E20 error code. One of the most frequent problems that can arise during a wash cycle is this code, which will prevent your machine from draining correctly.

It can save you time and money to know what causes the E20 error and how to fix it. Though there are other possible culprits as well, the drain system is usually the cause of the issue.

We’ll dissect the potential causes of the E20 error in this post and walk you through easy fixes to get your dishwasher operating again.

Why the circulation pump broke?

Bosch dishwashers rarely have circulation pump failures, so if the error code E20 shows up, you shouldn’t take the "home assistant" apart right away to check the pump for damage. Examine the drainage system first. It may just be clogged with debris or pieces of broken dishware that obstructed the pump impeller.

In the worst case scenario, which is damage to the pump, the cause of the failure might have been unexpected voltage surges in the network that caused the winding to break. Moreover, liquid may get on the pump’s electronic components or the heating element may burn out. To reset the error code E20, all of this needs to be verified.

The Bosch dishwasher error code E20 typically denotes a drainage problem, which is frequently brought on by a blocked hose, a clogged filter, or a malfunctioning drain pump. In order to ensure that water can exit the system correctly, this error must be fixed by inspecting and cleaning these parts. Time can be saved and expensive repairs can be avoided by being aware of this error and how to fix it.

First, reboot and clean

The Bosch dishwasher may display the given error code in addition to broken or clogged dishes in the event of a single system failure. Because of this, you should unplug the computer from the power source and restart it after about fifteen minutes. Should you be unable to remove the E20 error in this manner, as it appears on the screen once more, you will need to proceed to the next set of instructions.

First things first: let’s clean the waste filter that is situated in the washing chamber of the dishwasher. You must unscrew the filter, take out every dish basket, and open the bin door in order to access it. After that, it needs to be thoroughly cleaned with a brush or sponge under a strong stream of hot water.

If the dirt still won’t come off, you can soak the part for a few hours in a citric acid solution.

Next on your list of things to locate is the drain pump. Make sure the hole is completely dry, ideally with a big sponge to help remove any remaining water. After that, remove the drain pump cover and the fasteners. You can access the impeller in this manner, and it needs to be inspected for damage, debris, and broken glass. If the impeller appears to be operating properly but the E20 error persists, you will need to begin inspecting the pump.

Removing the circulation pump

Take out the error code. You can only determine whether the circulation pump is the hidden cause by deciphering the "home assistant." This is only worthwhile if the warranty has already expired; if not, your actions will void the guarantee. How can I go to the pump?

• Disconnect the Bosch dishwasher from all communications.
• Eliminate the equipment from the niche of the kitchen set, removing the fasteners, if it is a built -in model, or simply push the equipment from the wall if you have a separate machine.
• Open the door of the washing chamber.
• Remove all baskets for dirty dishes.
• Unscrew the legs with a wrench so that they do not interfere with work, and the machine could be removed from furniture.
• Unscrew the clamps and remove the decorative facade together with the overlay on the dishwasher door opening mechanism.
• Pull the tensioner cables installed to open the door to temporarily move them to the side.
• Remove the panel with cables from the other side of the Bosch dishwasher.
• Turn the machine upside down.
• Remove the two screws that hold the lower decorative panel of the "home assistant" installed at the front of the body, and then remove it.
• Pry up the clamp of the inlet pipe to disconnect the hose.
• Disconnect the power cord from the body of the device.
• Remove the fasteners for the drain and inlet hoses from the back of the body.
• Disconnect the sensor of the Aquastop leak protection system.
• Having disconnected the latches, lift the lower part of the machine body.
• At the bottom of the Bosch dishwasher, disconnect the Aquastop float.
• Remove the tray of the dishwasher.
• Disconnect the pipes and wiring from the pump.

Take some pictures of the wires being connected correctly to the electronic element, just in case. You’ll need them when you reassemble the dishwasher.

• Finally, remove the pump itself.

As you can see, disassembly requires a lot of time and energy. If you are not confident in your ability to disassemble the machine and test the pump, it is best to call a service center specialist.

When a Bosch dishwasher displays error E20, there is usually a drainage problem, which can be brought on by obstructions or pump issues. If you know what might be causing the issue—for example, blockages in the hose, pump, or filter—you can take easy measures to fix it on your own.

If clearing the hose and filter doesn’t resolve the problem, it might be essential to check the pump or get assistance from a professional. Frequent maintenance will keep your dishwasher operating smoothly and stop this error from happening again.

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