How to Fix Bosch Dishwasher E24 Error
Last updated: 30 September 2026
Turn off the power, clean the filter, check the drain hose and siphon, and clear any debris from the pump.
Overview
The Bosch E24 error code indicates a drain blockage. This guide covers diagnosing and clearing the blockage to restore proper drainage.
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).
- Turn off the dishwasher at the mains power switch and unplug it from the wall socket. Turn off the water supply at the isolation valve. This is essential for your safety before reaching into the dishwasher sump or removing any panels.
- Remove the lower dish rack from the dishwasher to access the filter assembly at the bottom. Twist the filter lock and lift out the cylindrical filter. Lift out the metal filter and clean away any food, grease, or debris. Rinse both filters under running water.
- Check for standing water above the filter. If there is standing water the dishwasher is not pumping water out. Remove the standing water carefully using a towel or a wet vacuum rated for liquids. Do not use an ordinary household vacuum as this can cause electric shock.
- Look down the drain opening for any visible debris. Use a knife to gently pry up the small plastic impeller cover. Keep your fingers clear of the blade. Lift out the cover to expose the impeller and check that it turns freely by spinning it with a gloved finger.
- Remove any glass, food, or other debris that may be blocking the impeller. A piece of glass or food debris caught in the impeller can stop it from spinning and trigger the E24 error. Use a phone camera to inspect deeper into the opening if you cannot see clearly.
- Check the waste water hose for kinks or crushed sections. The hose usually runs from the dishwasher to the sink waste or standpipe. If the hose is kinked, straighten it. Disconnect the hose from the siphon connection and check for any blockages in the hose end or the siphon opening.
- Clean the spray arms while the filters are removed. Use a toothpick to push debris out of the clogged spray holes. Rinse the spray arms under running water. Refit the pump cover firmly in its original position, then reinstall the metal filter and cylindrical filter.
- Reconnect the waste water hose and turn the water supply back on. Plug the dishwasher back into the mains power. Run a short rinse or drain cycle to test that the dishwasher drains correctly and the E24 error has cleared.
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 |
|---|---|---|
| E24 | Drainage fault, dishwasher cannot pump water out | Clean the filter, check the drain hose for kinks, clear any debris from the pump impeller, and check the siphon connection. |
| E25 | Drain pump blocked or pump cover missing | Check that the pump cover is correctly seated and locked in position. Remove any debris from the pump and ensure the impeller turns freely. |
| E15 | Water leakage in base of dishwasher | Check for leaks from hoses or the pump. Dry the base and check the water level sensor. |
| E09 | Heating element fault | Test the heating element with a multimeter. If faulty, replace the element. |
Frequently Asked Questions
What does Bosch E24 error mean?
Bosch E24 indicates a drainage fault. The dishwasher cannot pump water out, which is usually caused by a blocked filter, a kinked or blocked drain hose, a jammed impeller, or a blocked siphon connection.
How do I reset a Bosch dishwasher E24 error?
After clearing the blockage, turn the dishwasher off at the mains for a few minutes, then turn it back on. Run a drain or rinse cycle to test. If the E24 returns, the blockage has not been fully cleared.
Can I fix Bosch E24 error myself?
Yes, in most cases. Cleaning the filter, checking the drain hose, and clearing the impeller are all DIY-friendly tasks. If the pump itself is faulty, you may need a technician.
Why does my Bosch dishwasher keep showing E24?
If the E24 code keeps returning after cleaning, there may be a deeper blockage in the drain hose or an internal pipe. The drain pump may also be failing. In this case, call a qualified appliance technician.