Bosch Washer Error Code E18: How to Fix It
Medium 30-60 minutes High Severity
Verified June 2026
- Error Code
- E18
- Brand
- Bosch
- Product Type
- washer
- Severity
- High
- DIY Difficulty
- Medium
- Estimated Fix Time
- 30-60 minutes
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Tools You'll Need
- Towels
- Shallow pan or bucket
- Flashlight
- Plumber's snake (if needed)
- Phillips screwdriver
How to Fix Error Code E18
-
Safety First - Unplug the Washer
Always disconnect power before performing any maintenance to prevent electrical shock. -
Check and Clean the Drain Filter
Water will spill out when removing the filter - have towels and a pan ready to catch it. -
Inspect the Drain Hose
-
Test the Drain Pump
-
Run a Test Cycle
-
Check Household Drain System
Parts You May Need
Drain pump
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Drain filter
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Drain hose
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Drain pump
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Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
Drain pump
Check Price on Amazon
Drain filter
Check Price on Amazon
Drain hose
Check Price on Amazon
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When to Call a Professional
Call a professional appliance technician if the drain pump is faulty and needs replacement, if electrical connections appear damaged, or if the error persists after cleaning all accessible components. Also contact a plumber if your household drain system is backing up.Frequently Asked Questions
What does Bosch washer error code E18 mean?
Error code E18 (or F18) means the washer's drain pump isn't removing water within the expected time limit. This usually indicates a clogged drain filter, blocked hose, or faulty drain pump.
Can I still use my Bosch washer with E18 error?
No, you should not use the washer when error E18 appears. The error indicates water isn't draining properly, which can damage the washer and flood your laundry area if you continue using it.
How often should I clean my Bosch washer drain filter?
Clean the drain filter every 1-3 months, depending on usage and water hardness. Regular cleaning prevents lint and debris buildup that can cause E18 errors.
Is Bosch washer error E18 the same as F18?
Yes, E18 and F18 refer to the same drain pump error on Bosch washers. Different models may display the code with either an 'E' or 'F' prefix, but both indicate the same drainage problem.
How much does it cost to fix a Bosch washer E18 error?
If it's just a clogged filter or hose, the fix costs nothing but your time. If the drain pump needs replacement, expect to pay $150-300 for parts and labor from a professional technician.