Error code
Bosch Washing Machine Error Code E27
Quick answer
E27
Power supply or voltage issue
First safe action
Turn the machine off and unplug it from the mains.
Meaning
Bosch washing machine error code E27 usually points to unstable incoming power or the control system detecting an electrical supply problem.
Likely causes
- Temporary voltage fluctuation
- Loose power connection
- Internal control issue affecting power monitoring
Safe first checks
- Turn the machine off and unplug it from the mains.
- Check the plug is seated properly and the socket appears normal.
- Wait a few minutes before restoring power and retrying once.
How to reset
- Reconnect power after a short pause.
- Run a brief test cycle and stop if the code returns.
When to call an engineer
If the fault comes back and the power supply appears stable, the appliance may need electrical diagnosis.
Safety warning
Disconnect the appliance from the mains before checking the plug or cable and stop if there are signs of overheating or burning.
Useful hub links
Related fault codes
E25 for Bosch Washing Machine
The machine is not draining water correctly
E26 for Bosch Washing Machine
Water level or pressure sensing fault
E28 for Bosch Washing Machine
Control or wiring communication fault
E29 for Bosch Washing Machine
Water is not entering the machine properly
E23 for Bosch Washing Machine
Overflow or leak protection has been triggered
E30 for Bosch Washing Machine
Overflow or leak protection has been triggered
Relevant guides
Frequently asked questions
Can I keep using a Bosch washing machine with E27 showing?+
It is usually better to pause use until you have completed the safe first checks for E27, then test the machine with a short programme.
Will resetting clear E27 for good?+
A reset may clear a temporary interruption, but if E27 comes back after the first safe checks, the underlying fault still needs attention.