Bosch Washing Machine E23/F23 error code
The washer's AquaStop leakage protection has activated, meaning it detected water where it should not be. The machine locks out washing until the leak is resolved.
Also shown as: E23, F23
Last updated: September 30, 2026
What causes the E23/F23 error?
- Water leaking from a hose, seal, or connection
- Water pooling in the base of the machine
- AquaStop hose or float sensor triggered
How to fix Bosch E23/F23 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Turn off the water tap immediately
Stop the water supply at the tap right away and do not run the washer until it is fixed.Safety warning: Do not keep using a machine that is actively leaking; water near electrical parts is dangerous. - Contact Bosch support
Bosch's official guidance for E23/F23 is to call Bosch Customer Support at 1-800-944-2904 as soon as possible, since this is a leak-safety fault.
When to call a technician
- The code shows up at all - Bosch advises against any DIY use until it is fixed
- You see water under or around the machine
- The error returns after professional inspection
Frequently asked questions
Is it safe to keep washing with E23/F23?
No. Bosch says do not use the washing machine until the leak is fixed, because AquaStop exists to protect against water damage and electrical hazard.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.
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