Error code · Bosch

E:166 · Water not draining

The error indicates that the wash water is not being drained. Check the installation of the drain hose for any kinks or blockages.

Washing machineCaution — Know When to StopFixLens verified

Safe first steps

  1. Check the drain hose for any kinks or blockages.
  2. Ensure the drain hose is properly installed and not too high or low.
  3. If the hose is clear, check the drain pump for any obstructions.
  4. If the pump is blocked, follow the manual instructions to clean it safely.

When to stop

  • If the washing machine still does not drain after checking the hose and pump, call a professional for further assistance.

Likely cause

The error indicates that the wash water is not being drained. Check the installation of the drain hose for any kinks or blockages.

Verification

Reviewed by: automated manual extraction

Verified against Bosch WGE02407FG technical documentation

FixLens publishes its own structured technical logic verified against Bosch WGE02407FG documentation · last verified April 21, 2026.

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