Error E04 Dishwasher Bosch

What is the fault of Bosch error e04 affecting your dishwasher?

Do you have a Bosch dishwasher, and the Error Code E04 has appeared on the screen? This error typically occurs after many years of dishwasher use or extended operation. So, it could be considered normal to encounter this error, indicating that it's time to give your dishwasher some care.

However, you don't need to worry. Today, we will explain what this error means, its possible causes, and how you can easily and quickly resolve it.

The E04 error code on Bosch dishwashers indicates a problem with the water flow sensor in the dishwasher. This sensor measures the amount and pressure of water entering and exiting the appliance. If it detects an anomaly, it will stop the washing cycle and display the error on the screen.

Among the possible causes that can trigger the E04 error code on your dishwasher are the following:

• The sprayers are obstructed by food residues or dirt, preventing water from flowing correctly.
• The water flow sensor is dirty or damaged, causing it to malfunction or send incorrect signals to the electronic control board.
• The electronic control board is defective or has a loose connection, preventing it from receiving or processing sensor information correctly.

Fortunately, all of these causes have prompt and effective solutions. Nothing that good preventive maintenance can't prevent.

How to solve Bosch dishwasher error e04?

The best thing of all is that if you dare, you can try to solve this error code yourself without having to call technical support, unless it is strictly necessary. To solve the E04 error code in Bosch brand dishwashers, you can follow these steps below:

1. Restart the dishwasher to reset the sensors: This is the simplest step of all, and it's very likely that the error will disappear after performing this procedure. It's as easy as turning off your dishwasher completely, unplugging it from the electrical outlet, waiting a few minutes, and plugging it back in. Now, turn it on and start a short washing cycle to check if the error has disappeared.
2. Clean the spray arms with a soft brush to remove dirt residues: You can also remove them and soak them in hot water with vinegar for a few minutes to dislodge any debris they may contain. Reassemble them and ensure they function correctly.
3. Clean the water flow sensor with a damp cloth to remove any dirt that may interfere with its operation: The sensor is located at the bottom of the dishwasher, near the drain pump. Give it preventive maintenance; if you have an electronic cleaner, don't hesitate to use it to remove all types of dirt it may have. If you see that it's damaged or broken, you'll need to replace it with a new one.
4. Check the electronic control board for any burned, loose, or sulfated components: Disassemble the PCB electronic board located behind the dishwasher's control panel, under the top cover. Give it preventive maintenance with electronic cleaner and use a multimeter to measure continuity between its components. If you notice any sulfation, you can try to remove it very carefully with a soft-bristle brush and electronic cleaner, without applying too much pressure or force.
5. Also, check the connections leading to your electronic board: This wiring must be in perfect condition throughout its route. Check that it is not cut, scratched, burned, scorched, or sulfated at any of its ends. If so, you'll need to carefully cut and splice it or replace it entirely.
6. Repeat all the previous steps if the problem persists: You may have to perform several tests to pinpoint the exact cause of the error and resolve it definitively. Make sure to follow all the steps to the letter and don't overlook anything.
7. Contact Bosch technical support to resolve the issue: If none of the previous steps has worked for you, or if you don't feel confident performing them on your own, it's best to contact a qualified professional to inspect and repair your dishwasher. And who better than Bosch's technical service? We are confident that you are in the best hands as they will provide an accurate diagnosis and an absolute repair guarantee for your dishwasher.

To summarize and conclude our short guide of tips, the E04 error code is due to a fault in the water flow sensor or its related components. To solve it, here's a brief summary of what we've previously described in detail:

• Restart the dishwasher to reset the sensors
• Clean the spray arms with a soft brush to remove dirt residues
• Clean the water flow sensor with a damp cloth to remove any dirt that may interfere with its operation
• Check the electronic control board for any burned, loose, or sulfated components
• Also, check the connections leading to your electronic board
• Repeat all the previous steps if the problem persists
• Contact Bosch technical support to resolve the issue

As you've noticed from all the information we've provided earlier, what your dishwasher needs to operate at full capacity is a simple preventive maintenance and a little care on your part. We hope this article has been helpful to you, and that you've been able to resolve the E04 error code on your Bosch dishwasher. This type of fault typically occurs in devices that have been in use for many years, whether they are new or have been in use for an extended period. Goodbye!