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Source-backed error-code guide

Reviewed

Bosch Washer E23 / F23 Error Code

Bosch says E23/F23 indicates that the AquaStop hose has been activated and that there could be water leakage. Bosch says not to use the washer until it has been fixed.

Applies to Bosch washer with AquaStop or leakage protection

What the appliance detected

Detected condition

The Bosch washer reports that AquaStop or leakage protection has activated.

What may contribute

Possible causes

  • Water may be present where the washer detected a leak.
  • The AquaStop or leakage-protection system may have activated.
  • A hose, connection, seal, or internal water path may need service.

Start conservatively

Safe preliminary checks

Work in order and stop whenever a step is not supported by the documentation for your model.

  1. Record the Bosch washer display

    • Photograph or write down the exact code or symbol before clearing it.
    • Confirm the full model number and owner manual because Bosch washer codes can vary by platform and model.

  2. Use only documented homeowner checks

    • Turn off the water tap immediately if it is safe to do so.
    • Do not keep using the washer while this code is present.
    • Record the code and contact Bosch Customer Support or qualified service.

  3. Stop before internal washer work

    • If the code remains or returns after the documented checks, request Bosch support or qualified service.
    • Do not open electrical areas, bypass locks, test live components, or disassemble pumps, motors, controls, or AquaStop parts beyond the model manual.

Actions not recommended

  • Do not test live voltage or access internal wiring.
  • Do not bypass door locks, water-protection devices, or safety switches.
  • Do not treat the code as proof that one specific internal component failed.

When to stop and request service

  • E23 or F23 appears at all.
  • There is visible water, a leak, or uncertainty about water reaching electrical areas.
  • Any AquaStop, internal hose, wiring, or leak diagnosis is required.

Documented source

Official information reviewed

Our summary is based on manufacturer support material and stays within the limits of that material.

Source reviewed by Appliance Help HQ: August 18, 2026.

Appliance Help HQ is an independent informational site and is not affiliated with or endorsed by Bosch.

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