Bosch Washing Machine Error Code E27
On models that show it, E27 reports the supply voltage dropped below the level the machine needs, so it stopped to protect itself.
Also shown as: F27
Common causes
- Brownout or unstable supply
- Overloaded circuit in the home
- Fault in the supply to the outlet
What to check, in order
- Wait for the supply to stabilise and restart the programme.
- Try a different outlet on another circuit if it repeats.
- Frequent E27 with no known supply issues should be checked by an electrician first, then a technician.
Clear the code and test
- Fix what the checks above found first — a filter cleaned, a hose straightened, taps opened. Clearing the code without fixing the cause only brings it back.
- Close the door, plug the machine back in and restore the water supply.
- Run a short rinse and spin, or the shortest wash programme, and watch the stage where the code appeared before (filling, washing, draining or spinning).
- If the cycle finishes with no code, the fault is cleared. If the code returns at the same stage, write down the code and that stage before calling a technician — it speeds up the diagnosis.
When to call a professional
Most cases are solved by the checks above. Book a technician if any of these apply:
- The code comes back after you have run the checks and a test cycle.
- You smell burning, see sparks or scorch marks, or the breaker trips.
- Water is leaking and you cannot stop it at the tap.
- The fix needs panels opened beyond what your manual describes, or a part tested with a meter, and you are not set up for that.
When you call, give the brand, the code E27, your model number (on a label inside the door or on the back) and the checks you already ran. It shortens the visit.
Questions people ask about E27
What does E27 mean on a Bosch washing machine?
E27 means: Mains voltage too low. On models that show it, E27 reports the supply voltage dropped below the level the machine needs, so it stopped to protect itself.
Can I fix Bosch E27 myself?
Start yourself: the checks on this page cover the causes you can reach without opening the machine up. If they point to a faulty part, testing or replacing it is usually a technician job.
How do I clear Bosch E27?
Fix the cause first — clearing the code on its own brings it straight back. Then restore power and water, run the shortest programme, and watch the stage where the code appeared. If the programme finishes with no code, it is cleared.
Sources checked
- Bosch Home (US) owner support: dishwasher error codes
- Coolblue advice: Bosch and Siemens washing machine errors
The meaning and checks for this code were checked against the sources above in November 2026. Codes vary by model and region; if your manual lists a different meaning for your exact model, follow the manual.