Bosch Washing Machine E27 error code

E27 means the door lock mechanism has a fault — the sensor in the lock overheated or the lock cannot confirm it engaged. The washer will not start until the door lock reads correctly.

Also shown as: E27, E:27, F27

Last updated: October 6, 2026

Quick answer: Bosch washing machine error code E27: door lock sensor fault. The most common cause is overheated door lock sensor. Try this first — wait 30 minutes and retry. If that does not clear it, close the door firmly. If the code persists, call a qualified technician.

What causes the E27 error?

  • Overheated door lock sensor
  • Failed door latch assembly
  • Door not fully closed
  • Obstruction in the latch (clothing, debris)
  • Damaged wiring to the door lock
  • Control board not reading the lock signal

How to fix Bosch E27 — step by step

Work through these in order, from simplest and safest first. Stop as soon as the code clears.

  1. Wait 30 minutes and retry
    The lock sensor can overheat and needs to cool down. Turn the washer off, wait 30 minutes, then try again. This alone clears E27 in many cases.
  2. Close the door firmly
    Open the door fully, check that no clothing is caught in the seal, then push it shut firmly until you hear the latch click.
  3. Power reset the washer
    Unplug the washer for 5 minutes, then plug it back in. This clears the lock error state after the sensor has cooled.
  4. Replace the door latch assembly
    If E27 keeps returning, the latch assembly has failed. It is a plug-in part a technician can replace — on many models you reach it by pulling back the door gasket.
    Safety warning: Unplug the washer before any latch work. The latch carries mains voltage.

When to call a technician

Stop and call a qualified technician if any of these apply:
  • E27 returns after the cool-down and reset
  • The door will not lock or unlock at all
  • The latch assembly needs replacement
  • The washer is under warranty

Frequently asked questions

The door is locked shut with E27. How do I open it?

Wait for the sensor to cool (about 30 minutes), then power reset. Many models also have a manual release pull near the drain pump filter access.

Why does the lock sensor overheat?

The lock solenoid heats up with repeated locking attempts — for example, when the door was not fully closed and the washer kept retrying.

Is E27 the same as E16?

They are related. E16 usually means the door simply is not closed. E27 means the lock mechanism or its sensor has failed or overheated.

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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