Bosch Dishwasher: foreign object in sump

Professional Repair Guide

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 dishwasherâ€™s functionality and requires immediate attention to avoid further damage.

Urgency: Medium

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

Moderate 15-30 minutes

Tools Needed: screwdriver, gloves, towels

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

⚠️ Safety First: Always disconnect power before accessing pump

Clean filter and debris screen

Easy 5-10 minutes

Tools Needed: warm water, soft brush

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

⚠️ Safety First: Ensure filter is fully seated when reinstalling to avoid leaks

Professional Repairs

Drain pump inspection and repair / foreign object extraction

Estimated Cost: $100 - $300

Pump replacement due to damage from foreign object

Estimated Cost: $200 - $500

When to Call a Professional

Object lodged deep in pump not removable via filter access

Pump impeller is damaged or seized

Persistent drainage error codes after DIY attempts

Preventive Maintenance

Clean filter and sump area regularly: Foreign object buildup and blockage
Frequency: monthly
Preâ€‘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?

A foreign object may be lodged in the sump or pump inlet, or the filter could be clogged with debris.

How do I fix Bosch Dishwasher foreign object in sump myself?

Turn off the power, remove the bottom rack, and access the sump area to remove the object and clean the filter.

How much does it cost to fix foreign object in sump?

Professional repairs can cost between $100 and $500, depending on the extent of the damage.

When should I call a technician for foreign object in sump?

Call a technician if DIY solutions don't resolve the issue or if you suspect pump damage.

References & Sources

Dishwasher Error E25 - Bosch support Official

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

70%

DIY Success Rate Difficulty: DIY

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.