Bosch Dishwasher: foreign object in sump
What is this symptom?
Is your Bosch dishwasher showing an error indicating a blockage? You may have a foreign object lodged in the sump or pump inlet, leading to water remaining at the bottom and potential rattling or grinding noises. This common issue can disrupt your dishwasher’s functionality and requires immediate attention to avoid further damage.
Important Tips for Bosch Models
- Bosch error code E25 specifically indicates pump blocked with foreign objects or incorrect pump cover installation.
Possible Causes
Foreign object lodged in dishwasher sump or pump inlet
How to Identify: Error code such as E25 indicating blockage, rattling or grinding noises during wash, standing water at bottom.
Part: Sump area / drain pump
Filter or debris screen clogged with food particles or objects
How to Identify: Slow or failed drainage; visible food debris around filter; error codes like E22 pointing to filter blockage.
Part: Filter assembly above sump
DIY Solutions
Remove foreign object from sump/pump area
- Turn off power and disconnect dishwasher
- Remove bottom dish rack and unscrew/remove filter assembly
- Remove pump cover to access sump area
- Carefully remove debris or foreign objects from sump and check impeller can rotate
- Reassemble filter and cover, restore power and test drain cycle
Clean filter and debris screen
- Turn off dishwasher
- Remove bottom rack
- Lift out filter assembly
- Rinse under warm water and brush away trapped debris
- Reinstall filter and run a short cycle to check drainage
Next step
Choose the next step for foreign object in sump
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Drain Pump
Pumps waste water out of the appliance during the drain cycle.
- Typical part-only price
- $35 - $80
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Dishwasher Filter
Screens food debris from recirculating wash water and protects the pump system.
Model-compatible Dishwasher parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Dishwasher Cleaner and Descaler
Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.
Braided Dishwasher Inlet Hose
For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Professional Repairs
Drain pump inspection and repair / foreign object extraction
Pump replacement due to damage from foreign object
When to Call a Professional
Preventive Maintenance
-
Clean filter and sump area regularly: Foreign object buildup and blockage
Frequency: monthly -
Pre‑rinse dishes to remove large debris: Large food particles entering sump
Frequency: each use
Frequently Asked Questions
Why is my Bosch Dishwasher foreign object in sump?
How do I fix Bosch Dishwasher foreign object in sump myself?
How much does it cost to fix foreign object in sump?
When should I call a technician for foreign object in sump?
References & Sources
- Dishwasher Error E25 - Bosch support Official
Community Analytical Insights
Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions
Common Issues Reported by Users
- Foreign object (e.g., ceramic blade) dislodged from dishes during wash cycle
- Improper loading of dishes causing items to shift and break
- Wear and tear on dishwasher components leading to loose parts
User Suggested Solutions
-
1. Unplug the dishwasher or turn off the circuit breaker. 2. Remove the bottom rack to access the sump area. 3. Inspect the sump for the foreign object and carefully remove it using pliers or your fingers. 4. Check for any damage to the sump or impeller. 5. Reassemble the dishwasher and plug it back in.
-
1. If the foreign object is not visible, remove the filter and check for any blockages. 2. Clean the filter and the area around the sump thoroughly. 3. Reassemble and test the dishwasher.
-
1. If the object is lodged deep within the pump, consider disassembling the pump assembly. 2. Follow the manufacturer's service manual for disassembly and reassembly. 3. If unsure, consult a professional.
Limited-source guidance; percentages and success-rate claims are not shown
View
Sources
Data compiled from real discussions on r/appliancerepair and r/Appliances:
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