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Bosch·Washermedium severity
Bosch Washer Error Code E18
Drain timeout
Common Causes
- 1Clogged pump filter
- 2Kinked drain hose
- 3Drain pump blockage
Step-by-Step Troubleshooting
- 1
Open the pump filter flap at the front bottom of the Bosch cabinet and route the small drain spout into a shallow pan first
- 2
Slowly unscrew the filter cap — Bosch caps release a surge of trapped water, so ease it out and let it drain in stages
- 3
Clear the pump filter cavity of coins, buttons, and hair clips, then reach in and feel the impeller for a jammed object
- 4
Trace the drain hose for kinks and confirm the outlet height stays under the Bosch maximum of about 39 inches
- 5
If the machine is stuck locked with water inside, pull the emergency drain tab behind the same filter flap before servicing
Pro Diagnostic Tip
Bosch designs the front-load pump filter for routine owner cleaning, and that user-serviceable trap is the whole reason E18 is usually a five-minute fix rather than a service call. If E18 comes straight back with a spotless filter, listen closely to the pump during the drain step — a rattling or buzzing impeller means a snapped blade and the pump must be swapped even though the trap is clear. Unlike a fill code, E18 leaves the drum full, so bail it before opening the door.
You Might Also Notice
- •Water remains in the drum after the cycle
- •The drain step runs on endlessly
- •Foul smell from the pump area
- •Clothes come out sopping and unspun
- •A buzzing pump that never moves the water
Parts, Cost & Difficulty
Repair Difficulty
Easy — DIY FriendlyEstimated Repair Cost
$0–$250
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
Drain pump assemblyPump filter cap with sealDrain hose
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
Book a Free Diagnostic VisitOr call for a free consultation (415) 795-7300Available 24/7 — call or text
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What This Repair Involves
Here's what a professional technician does to resolve this issue:
Clean pump filter
This repair requires bearing pullers, drum spider wrenches, and diagnostic software for control board calibration. Most homeowners find it safer and more cost-effective to have a licensed technician handle it.
Safety First — Know the Risks
High-voltage components and pressurized water lines create flood and shock risk. A single loose fitting can cause thousands in water damage. Our techs are licensed and insured — let them handle the risk.
Let a Licensed Pro Handle ItOr call for a free consultation (415) 795-7300Available 24/7 — call or text
Licensed & Insured · 90-Day Warranty · Same-Day Service
Ready to Get This Fixed?
Don't let error code E18 disrupt your day. A professional diagnosis takes about 30 minutes — and it's free when you proceed with the repair.
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Frequently Asked Questions
What does Bosch error code E18 mean?
Bosch error code E18 indicates: Drain timeout. This is a medium-severity issue affecting your washer.
How do I fix Bosch error code E18?
Open the pump filter flap at the front bottom of the Bosch cabinet and route the small drain spout into a shallow pan first Then, Slowly unscrew the filter cap — Bosch caps release a surge of trapped water, so ease it out and let it drain in stages Then, Clear the pump filter cavity of coins, buttons, and hair clips, then reach in and feel the impeller for a jammed object There are 2 more steps — see the full troubleshooting guide above. If these steps don't resolve the error, contact a professional.
How do I know if my washer has error E18?
Besides the error code on the display, common signs include: Water remains in the drum after the cycle; The drain step runs on endlessly; Foul smell from the pump area. If you notice any of these symptoms, check your washer's display panel for error code E18.
How much does it cost to fix Bosch E18?
Repair costs for Bosch E18 typically range from $0 to $250 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.
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