Bosch Washing Machine Error E04
⚡ Quick Answer: The Bosch washing machine E04 error indicates a problem with the drainage system, often caused by excessive suds or a blockage in the drain pump. This... ✅ DIY Fixable
What Does Error E04 Mean?
The Bosch washing machine E04 error indicates a problem with the drainage system, often caused by excessive suds or a blockage in the drain pump. This error typically occurs during the drain phase, preventing the washer from properly draining water and may cause the machine to stop mid-cycle. Common symptoms include visible foam in the drum, slow or no drainage, and the error code displayed on the screen. To resolve this, reduce detergent usage and clean the drain pump filter to eliminate any obstructions.
Common Symptoms:
- Error appears during or at the end of drain phase
- Washer stops mid‑cycle with code E04 displayed
- Excessive foam visible in drum or during spin
- Slow or no water drainage
Possible Causes
- Excessive foam due to improper detergent or too much detergent (medium)
- Clogged or obstructed drain pump / drain filter (medium)
- Obstruction in drain hoses or sump area (medium)
How to Fix Error E04
DIY Fix Check and reduce foam/suds
- Stop the current cycle and let foam settle
- Ensure you use a high‑efficiency (HE) detergent appropriate for Bosch washers
- Reduce the amount of detergent in future cycles
- Run an extra rinse/spin cycle to clear suds
DIY Fix Clean drain pump filter and check for obstructions
- Unplug the washer from power
- Locate the drain pump access panel at the bottom front
- Place towels to catch water and slowly open the pump filter cover
- Remove lint, coins, debris from the filter and visible pump inlet
- Reinstall the filter and test the washer
Technician Only Inspect drain pump, hoses, and internal sump for blockages or failure
- Disconnect power and remove access panels
- Inspect and clean the full drainage pathway including sump and hose
- Test the drain pump’s electrical and mechanical operation
- Replace the drain pump if found faulty
Parts needed: drain pump, drain hose, sump assembly
- If error persists after reducing detergent, cleaning filter, and checking for visible obstructions
- If water leaks appear when cleaning the pump or hoses
- If mechanical parts like the drain pump are suspected to be failing
Next step
Choose the next step for E04
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.
Drain Hose
Carries waste water from the drain pump to your home's standpipe or sink drain.
Model-compatible Washing Machine 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.
Washing Machine Cleaner Tablets
Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.
Braided Washer Inlet Hoses
A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.
Washer Drain Hose Holder
Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | N/A |
|---|---|
| component | Door Lock Mechanism |
| resistance | N/A |
| part_number | Bosch 00627415 |
| voltage_rating | 120V AC |
Common Questions
What does E04 error mean on Bosch washing machine?
E04 indicates a drainage issue, often due to excessive foam or a blockage in the drain pump.
Can I fix Bosch washing machine E04 error myself?
Yes, you can reduce foam and clean the drain pump filter to try and resolve the issue.
How much does it cost to fix E04 error?
The estimated repair cost ranges from ¥8,000 to ¥25,000 depending on the service provider and model.
When should I call a technician for E04?
Call a technician if the error persists after cleaning or if you suspect mechanical failures.
Sources & References
- How to Fix Bosch Washer Error E04 – Expert Guide (community)
- Bosch Washer E04 – Reduce Foam or Clean Drain Pump (community)
- Bosch Washer Error Codes | Bosch Home (official)
Data last verified: 2026-07-25
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