How to Fix Bosch Dishwasher E09 Error
Last updated: 7 September 2026
Test the heating element with a multimeter and replace it if faulty.
Overview
Bosch dishwasher E09 error indicates a heating element fault. This guide covers diagnosing and fixing the E09 error.
Step-by-Step Fix
Before beginning any repair, ensure you have isolated power or water supplies. Clear your workspace, gather standard hand tools, and wear appropriate personal protective equipment (PPE).
- First, turn off the dishwasher and unplug it from the mains power supply. Remove the bottom rack from the dishwasher to access the heating element at the bottom of the machine.
- Locate the heating element, which is usually a tubular component at the bottom of the dishwasher. It is often visible at the back or centre of the machine, near the filter.
- Test the heating element for continuity using a multimeter set to resistance. Disconnect the wires from the heating element and test the resistance across the terminals. A reading between 15 and 30 ohms indicates the element is functioning. An open circuit (OL) indicates a fault.
- If the heating element is faulty, it will need to be replaced. Purchase a replacement element that is compatible with your dishwasher model. Disconnect the old element and install the new one, ensuring all connections are secure.
- Check the thermostat and the thermal fuse for any faults. These components are often located near the heating element. Test them for continuity using a multimeter. If they are faulty, they will need to be replaced.
- After replacing the heating element or any faulty components, reassemble the dishwasher. Ensure all connections are secure and that the heating element is correctly positioned.
- Plug the dishwasher back into the mains power and turn it on. Run a short cycle to test the dishwasher and confirm that the E09 error has cleared.
- If the E09 error persists after replacing the heating element, there may be a fault with the control board. This is a more complex repair that requires a qualified appliance technician.
Common Error Codes
Review the common error codes and operating symptoms below to quickly identify the root cause of the fault before ordering replacement parts.
| Symptom / Code | Likely Root Cause | Recommended Resolution |
|---|---|---|
| E09 | Heating element fault | Test the heating element with a multimeter and replace it if faulty. Check the thermostat and thermal fuse for faults. |
| E15 | Water leakage | Check for water leaks in the base of the dishwasher. This is a different error that may occur alongside E09 if water cannot heat properly. |
| E24 | Drain blockage | Clean the filter and check the drain hose for blockages. This is a different error that may occur alongside E09 if water cannot drain properly. |
| E16 | Water intake fault | Check the water supply and the inlet valve. If the valve is faulty, it will need to be replaced. |
Frequently Asked Questions
What does Bosch E09 error mean on a dishwasher?
Bosch E09 error indicates a heating element fault. This means the dishwasher is unable to heat the water to the correct temperature, which can result in poor cleaning performance. The error can be caused by a faulty heating element, a faulty thermostat, or a problem with the control board.
How do I reset Bosch dishwasher E09 error?
After replacing the heating element, turn off the dishwasher at the mains for a few minutes, then turn it back on. The E09 error should clear. If it does not, there may still be an issue with the heating system or the control board.
What causes Bosch E09 error?
Bosch E09 error is caused by a heating element fault. This can be due to a faulty heating element, a faulty thermostat, a blown thermal fuse, or a problem with the control board. It can also be caused by limescale buildup on the heating element.
Can I fix Bosch E09 error myself?
Yes, you can test the heating element with a multimeter and replace it if it is faulty. If the thermostat or thermal fuse is faulty, you can also replace these components. However, if the control board is faulty, you will need to call a qualified appliance technician.