Bosch Washing Machine Error Code E04
Anti-flood device activated — water detected in base
The Bosch AquaStop system has detected water in the base tray of the washing machine. This is a safety shutdown.
What Does Error Code E04 Mean on a Bosch Washing Machine?
Anti-flood device activated — water detected in base.
The Bosch AquaStop system has detected water in the base tray of the washing machine. This is a safety shutdown.
What Causes Error Code E04?
Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:
- 1 Water supply hose fitting leaking 35% of cases
- 2 Door seal damaged 30% of cases
- 3 Internal hose connection loose 25% of cases
- 4 Tub or pump housing crack 10% of cases
How to Fix Bosch Washing Machine Error Code E04
- 1
Tilt machine to drain base
Carefully tilt machine forward to drain water from base tray. Power off first.
⚠️ Turn off water and power before tilting. - 2
Inspect supply hose fittings
Check hose connections at wall and at machine for any weeping.
- 3
Inspect door seal
Check gasket for tears or detachment.
🔩 Bosch washer door seal ($30–$75) - 4
Inspect internal hoses
Access back panel and check internal hose connections.
How to Reset Error Code E04
Drain base, fix leak, allow to dry. Code clears when float sensor resets.
Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.
When to Call a Professional
If no external leak is visible, internal tub or pump housing crack needs professional diagnosis.
Find Replacement Parts
Use these links to find the exact replacement parts for your Bosch Washing Machine:
External links — ApplianceErrors.com is not affiliated with these retailers.