Bosch Washing Machine Error E18
⚡ Quick Answer: The Bosch washing machine error code E18 indicates a drainage issue, typically caused by a blocked or clogged drain pump filter. When this error occur... ✅ DIY Fixable
What Does Error E18 Mean?
The Bosch washing machine error code E18 indicates a drainage issue, typically caused by a blocked or clogged drain pump filter. When this error occurs, the machine may fail to pump out water, leading to water remaining in the drum, unusual sounds during the drain cycle, or the wash cycle pausing unexpectedly. Proper troubleshooting can resolve this issue by cleaning the filter and inspecting the drain hose for blockages.
Common Symptoms:
- Water remaining in drum
- Wash cycle stops or pauses during drain
- Unusual sounds during drain
- Error code displayed when unable to empty water
Possible Causes
- Blocked or clogged drain pump filter (high)
How to Fix Error E18
DIY Fix Check and clean drain pump filter
- Turn off and unplug the washer
- Open the service flap at the bottom front
- Place a shallow tray/towels to catch water
- Remove and clean the drain pump filter of debris
- Reinstall the filter securely and close the flap
- Run a short drain/spin cycle to test
DIY Fix Inspect drain hose for kinks and blockages
- Pull washer away from wall to access hose
- Check hose path for kinks or bends
- Detach hose from machine and drain connection
- Flush or clear blockages from hose
- Reattach hose ensuring proper positioning
Technician Only Inspect and replace drain pump if faulty
- Disconnect power and water supply
- Remove access panel and locate drain pump
- Test pump impeller movement and electrical function
- Replace drain pump unit if defective
Parts needed: drain pump assembly
- After cleaning filter and hose if E18 persists
- If unusual noise from pump indicating mechanical fault
- If water still doesn’t drain after basic troubleshooting
Next step
Choose the next step for E18
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.
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.
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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 | 30W |
|---|---|
| component | Drain Pump |
| resistance | 10-20 ohms |
| part_number | Bosch 00419508 |
| voltage_rating | 240V AC |
Common Questions
What does E18 error mean on bosch washing machine?
The E18 error indicates a drainage issue, often due to a blocked drain pump filter.
Can I fix bosch washing machine E18 error myself?
Yes, you can check and clean the drain pump filter and inspect the drain hose for blockages.
How much does it cost to fix E18 error?
Repair costs range from $50 to $200 for the drain pump part, plus labor.
When should I call a technician for E18?
Call a technician if E18 persists after cleaning, if you hear unusual noises from the pump, or if water still doesn't drain.
Sources & References
- Bosch Owner Support E18 error code guidance (official)
- Bosch UK support page on E18 error (official)
Data last verified: 2026-07-25
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