F23Serious
Bosch Washer F23 Error Code
Water leak detected by AquaStop system; water inlet shut off.
Common causes
- Leaking hose or connection
- Faulty AquaStop valve
- Overflow from suds
How to fix it
- Unplug washer
- Check all hoses for leaks
- Clean drain pump filter (may be clogged causing overflow)
⚠ When to call a pro: If no visible leak but error persists, or constant leak
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.