How to Fix Bosch Dishwasher E15 Error
Last updated: 7 September 2026
Turn off the water supply, remove the base panel, dry any water, and check for leaks from hoses or the pump.
Overview
Bosch dishwasher E15 error indicates water leakage in the base of the appliance. This guide covers diagnosing and fixing the E15 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. Turn off the water supply to the dishwasher at the isolation valve, usually located under the sink or behind the appliance. This prevents further water from entering the machine.
- Remove the base panel at the bottom of the dishwasher. This is usually held in place by a few screws or clips. Place the panel aside carefully, taking care not to damage any wires or hoses that may be attached to it.
- Inspect the base of the dishwasher for any standing water. Use a dry cloth or sponge to soak up any water you find. Check the water level sensor, which is a small float switch at the bottom of the machine, for any signs of water or debris that could be causing the sensor to trip.
- Check all water hoses and connections inside the dishwasher base for any signs of leakage. Pay particular attention to the inlet hose connection, the drain hose connection, and the pump housing. Look for drips, wet spots, or mineral deposits that indicate a slow leak.
- If you find a leak from a hose connection, tighten the connection with pliers. If the leak is from a damaged hose, the hose will need to be replaced. This may require removing the dishwasher from its housing to access the hoses fully.
- If you find a leak from the pump housing, the pump seal may be worn or damaged. This is a more complex repair that may require replacing the pump or the pump seal. If you are not confident in your ability to replace the pump, call a qualified appliance technician.
- Once you have identified and fixed the leak, dry the base of the dishwasher thoroughly. Ensure there is no residual water that could trigger the E15 error again. Reattach the base panel securely.
- Turn the water supply back on and plug the dishwasher back into the mains power. Run a short cycle to test the dishwasher and confirm that the E15 error has cleared. If the error returns, there may be an internal leak that requires professional repair.
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 |
|---|---|---|
| E15 | Water leakage in the base of the dishwasher | Check all hoses and connections for leaks. Dry the base and test the dishwasher. If the error persists, call a qualified appliance technician. |
| E24 | Drain blockage | Clean the filter and check the drain hose for blockages. This is a different error that may occur alongside E15 if water cannot drain properly. |
| E09 | Heating element fault | Test the heating element with a multimeter. If the element is faulty, it will need to be replaced. This is a more complex repair that may require professional assistance. |
| E16 | Water intake fault | Check the water supply and the inlet valve. If the valve is faulty, it will need to be replaced. Clean the inlet filter before replacing the valve. |
Frequently Asked Questions
What does Bosch E15 error mean on a dishwasher?
Bosch E15 error indicates that water has leaked into the base of the dishwasher, triggering the water safety system. This is a serious issue that requires immediate attention to prevent further damage to the appliance and your kitchen.
Can I fix Bosch E15 error myself?
Yes, you can check for visible leaks from hoses and connections. If you find a loose connection, you can tighten it. However, if the leak is from an internal component or the pump, you will need to call a qualified appliance technician.
How do I reset Bosch dishwasher after E15 error?
After fixing the leak, dry the base of the dishwasher thoroughly. Turn off the dishwasher at the mains for a few minutes, then turn it back on. The E15 error should clear. If it does not, the leak may still be present or the water sensor may be faulty.
What causes Bosch E15 error?
Bosch E15 error is caused by water leakage into the base of the dishwasher. This can be due to a loose or damaged hose connection, a faulty pump seal, or a crack in the pump housing. It can also be caused by overfilling the dishwasher or using the wrong type of detergent.