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F04

F04 — Water leakage detected

Bosch · Washing Machines

What does F04 mean?

The washing machine has detected a water leak. This requires immediate attention to prevent water damage.

Common Causes

  • Loose water connections
  • Damaged hoses or seals
  • Internal leak

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect all visible water connections for tightness.

  2. 2

    Check hoses and seals for any signs of damage or wear.

  3. 3

    If the source of the leak cannot be found, contact customer support.

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
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