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Bosch·Washerhigh severity
Bosch Washer Error Code E04
Water leak
Common Causes
- 1Door seal leak
- 2Hose connection failure
- 3Tub seal damage
AquaStop hose includes an electrical shutoff valve. Once triggered, it locks permanently and must be replaced — it cannot be manually reset.
Step-by-Step Troubleshooting
- 1
Inspect door boot seal for tears, foreign objects, or mold buildup
- 2
Check all hose clamp connections at tub, pump, and inlet valve
- 3
Run a short cycle and observe from below with a flashlight for drip source
- 4
Inspect tub-to-bearing seal — rusty water indicates bearing seal failure
Pro Diagnostic Tip
Bosch AquaStop triggers E04 even for minor seepage. Place a dry paper towel sheet under each connection point and run a 15-minute cycle to isolate the exact leak location before ordering parts.
You Might Also Notice
- •Water on floor during wash
- •AquaStop indicator active
- •Rusty residue on clothes
- •Musty odor
Parts, Cost & Difficulty
Repair Difficulty
Hard — Advanced Skills RequiredEstimated Repair Cost
$200–$550
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
12-008-761-001 (door boot seal)12-006-429-001 (tub bearing seal kit)12-009-117-005 (AquaStop supply hose)
Do You Have the Right Tools?
Bearing puller set ($120), drum spider wrench ($85), multimeter ($85), and diagnostic software. Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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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.
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Get Professional Help Now
Error code E04 is a high-severity issue that can cause further damage to your washer if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does Bosch error code E04 mean?
Bosch error code E04 indicates: Water leak. This is a high-severity issue affecting your washer.
How do I fix Bosch error code E04?
Inspect door boot seal for tears, foreign objects, or mold buildup Then, Check all hose clamp connections at tub, pump, and inlet valve Then, Run a short cycle and observe from below with a flashlight for drip source There are 1 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my washer has error E04?
Besides the error code on the display, common signs include: Water on floor during wash; AquaStop indicator active; Rusty residue on clothes. If you notice any of these symptoms, check your washer's display panel for error code E04.
How much does it cost to fix Bosch E04?
Repair costs for Bosch E04 typically range from $200 to $550 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.