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F23

F23 — Aquastop activated

Bosch · Washing Machines

What does F23 mean?

The Aquastop system has been activated, likely due to a detected leak or malfunction within the water intake system. The program is canceled and the door is locked.

Common Causes

  • Water leak detected by Aquastop sensor
  • Aquastop system malfunction
  • Faulty water inlet valve

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    The program is canceled, and the door remains locked.

  2. 2

    Check the water connections and hoses for leaks.

  3. 3

    Consult the manual or contact support for specific Aquastop reset procedures.

Browse all codes in this manual (47)
Verified technical data. Last updated: April 2026

Related Faults

E02E02 — Motor problemE67E67 — Incorrect module encodingF01F01 — Door not closed or laundry obstructing door
Source: Bosch Washing Machines
Open Manual (Page 2)Search more codes in this manual