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What Does “E09” Mean on a Bosch Dishwasher?

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Bosch dishwashers are renowned for their reliability and high performance. However, like any household appliance, they may occasionally display error codes. One such error code is “E09”. In this article, we will delve into the specifics of what the “E09” error code means on a Bosch dishwasher, its causes, potential solutions, and preventive measures you can take to avoid this error.


The “E09” error code on a Bosch dishwasher signifies a problem with the heating element. This could be due to a faulty heating element itself or an issue with the control board that’s not supplying power to the heating element. It’s recommended to consult a professional technician to diagnose and fix the problem.

Understanding Error Codes on Bosch Dishwashers

Error codes on Bosch dishwashers serve as a diagnostic tool to help identify and troubleshoot potential issues with the appliance. These codes are typically displayed as an “E” followed by a number, each pointing to a specific problem. By understanding these codes, users can determine whether they can fix the issue themselves or if they need to call in a professional technician.

Decoding the “E09” Error Code

The “E09” error code on a Bosch dishwasher signifies a malfunction with the heating element. This issue could stem from a faulty heating element or a problem with the control board that’s not supplying power to the heating element. Due to safety concerns, Bosch recommends against trying to resolve this issue on your own. Instead, you should book an appointment with a professional technician who can properly diagnose and rectify the problem.

Potential Causes of the “E09” Error Code

The “E09” error code can be triggered by several potential problems:

  • A burnt-out or failed heating element.
  • A faulty control board that’s not supplying power to the heating element.
  • A malfunctioning sensor that doesn’t detect water and salt levels properly.

Other possible causes include a communication problem inside the dishwasher, which can be fixed by power cycling the appliance, or a faulty thermostat.

Initial Troubleshooting Steps for the “E09” Error Code

If you encounter the “E09” error code, here are some initial steps you can take:

  1. Power cycle the appliance: Unplug the dishwasher for 5 minutes, then plug it back in and turn it on. This can resolve any communication issues within the dishwasher.
  2. Inspect the salt sensor: Clean the dishwasher salt sensor, which checks if the dishwasher has enough soap to clean the dishes.
  3. Check the heating element: If the error persists, the heating element might be burnt out and need replacement.
  4. Examine the control board: A faulty control board could also cause the E09 error code. Check for any damaged relays, such as the heater relay, which might prevent the power supply to the heating element.

When to Consult a Professional Technician

If the issue persists after trying these solutions, or if you’re not comfortable performing these steps, it’s recommended to consult a professional technician. They can diagnose and fix the problem, whether it involves replacing the heating element or addressing control board problems.

Preventive Measures to Avoid the “E09” Error Code

To reduce the likelihood of encountering the E09 error code, you can:

  • Regularly inspect and clean the dishwasher’s heating element.
  • Maintain the dishwasher’s salt levels according to the manufacturer’s recommendations.
  • Use the appropriate dishwasher detergent.
  • Avoid overloading the dishwasher.
  • Monitor your dishwasher for any error codes or warning lights.

By understanding what the “E09” error code means on a Bosch dishwasher, you can take proactive steps to prevent this error and maintain your dishwasher’s optimal performance. However, if the error code does appear, it’s essential to address the issue promptly to prevent further damage to the appliance.

Understanding the error codes on your Bosch dishwasher can save you time and money by identifying issues early, and either fixing them yourself or calling in a professional before the problem escalates. Remember, safety first – if you’re unsure, don’t hesitate to seek professional help.

Frequently Asked Questions

What are some other common error codes on Bosch dishwashers?

Apart from the “E09” error code, some other common error codes on Bosch dishwashers include “E01” (heating issue), “E15” (water in the base plate), “E22” (filter blocked), and “E24” (drainage issue).

How long does a heating element last in a Bosch dishwasher?

The lifespan of a heating element in a Bosch dishwasher varies based on usage and maintenance. However, it typically lasts anywhere between 5 to 10 years.

Can I use any dishwasher detergent in a Bosch dishwasher?

While you can use most dishwasher detergents, Bosch recommends using detergents and rinse agents specifically designed for use in Bosch dishwashers for optimal performance.

How often should I clean the heating element in my Bosch dishwasher?

It is recommended to inspect and clean the heating element in your Bosch dishwasher every 3 to 6 months. However, if you notice a decrease in cleaning performance, it might be worth checking sooner.

Is it safe to use my Bosch dishwasher if it’s showing the “E09” error code?

It’s not recommended to use your Bosch dishwasher if it’s displaying the “E09” error code. This error indicates a problem with the heating element, which could potentially lead to more serious issues if not addressed promptly.

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