Quick answer: A Bosch dishwasher that does not drain may have a blocked filter, an obstructed drain hose or a household plumbing problem. On some Bosch models, error E24 relates to a drainage issue; E25 can indicate a drain-pump blockage. Error meanings and owner-serviceable steps depend on the exact model, so use the manual before removing components.
What to check first
- Confirm the cycle finished. An interrupted cycle can leave water behind. Consult the manual for the supported cancel or drain operation.
- Look at the water level. A little water in a sump below the filter can be normal on some designs. Water covering the tub floor after a completed cycle deserves attention.
- Inspect the removable filter only as directed. Switch off the machine, allow hot water to cool and follow the manual. Broken glass or sharp debris may be present.
- Check the sink drain. If the sink is backing up, the dishwasher may not be able to discharge into shared plumbing.
- Look for visible hose kinks. Do not pull out a built-in appliance, disconnect wastewater pipes or bypass safety protections to investigate.
Bosch dishwasher error E24 versus E25
| Display | Possible meaning | Next step |
|---|---|---|
| E24 | Drainage-related fault on certain models | Review the model-specific Bosch guidance for the filter, drain hose and plumbing. |
| E25 | Drain pump blocked or pump cover not fitted correctly on certain models | Follow only the owner-accessible inspection procedure in the correct manual. |
These are not universal definitions for every Bosch dishwasher. Record the complete model number and error display before arranging service.
How to tell where the problem may be
If water remains after a cycle but no error appears, first verify that the cycle actually completed. If E24 appears, Bosch lists a blocked drain filter, drain-hose obstruction, or a disposal connection plug among potential causes. If E25 appears, Bosch points to the pump or pump cover. These clues narrow the next safe check but do not establish a definitive diagnosis.
Before checking the filter or pump area
Allow hot water and internal parts to cool. Switch off the dishwasher and follow the safety and filter-removal steps in the manual for the exact model. Remove only components the manufacturer explicitly identifies as owner-serviceable. Wear appropriate hand protection where sharp debris may be present; never reach blindly into an opening. Replace all covers and filters exactly as instructed before restarting.
Common questions
Does E24 always mean the pump has failed?
No. Bosch lists filter and drain-path obstructions among possible causes, so replacing a pump without diagnosis may be unnecessary.
Can I clear E25 just by resetting the dishwasher?
A reset does not remove physical debris or fix an incorrectly seated pump cover. Use the model manual to investigate the indicated condition and contact support if the error returns.
Should I remove a built-in dishwasher to inspect the hose?
Not as a first step. Check visible plumbing and owner-accessible parts. Moving an installed unit may involve electrical, water and cabinet hazards; ask a professional when access is unsafe.
When to call a technician
Stop using the appliance if water leaks onto the floor, an electrical protection device trips, there is a burning smell, or access would require disassembly or live electrical testing. A qualified technician should handle inaccessible pumps and electrical faults.
Related troubleshooting guides
Manufacturer sources to consult
Read Bosch’s official not-draining guidance, E24 explanation, and E25 explanation. Bosch identifies E24 with drainage and filter issues, while E25 can mean a blocked drain pump or a loose or missing pump cover. Consult the manual for your exact model before opening any owner-serviceable part. This guide is a general orientation, not a claim of testing a particular appliance.