Bosch Induction Hob Error E1 — How to Fix It

What it means

Bosch induction hob error E1 usually indicates an electronic or temperature fault.
The most common fix is to switch the hob off at the main power supply, wait 5 minutes, and restart to reset the electronics.

How to Fix It

Switch off at the power supply

Turn the hob off using the control panel, then switch off at the wall socket or circuit breaker.
Wait 5 minutes to allow the electronics to fully discharge and reset, then restore power.
Check for overheating

Error E1 can be triggered by the hob electronics overheating, often caused by high-heat cooking for extended periods or a blocked ventilation gap underneath the hob.
Ensure adequate ventilation under the unit.
Verify the installation ventilation gap

Bosch induction hobs require a ventilation gap underneath (typically 20–50 mm depending on the model).
Check the installation manual for the required clearance and ensure nothing is blocking the underside airflow.
Allow the hob to cool before restarting

If the hob was in use before E1 appeared, allow it to cool for 20 minutes with the power off before restarting.
An E1 caused by thermal protection will not clear until the hob has cooled.
Check the mains power supply

E1 can appear if the mains voltage drops significantly during operation.
Check that no other high-power appliances are sharing the same circuit and that the supply voltage is stable.
Contact Bosch service if E1 persists

If E1 reappears after a full cool-down and restart, the IGBT control board or a temperature sensor has failed.
This requires professional repair — contact Bosch customer service or an authorised engineer.

Frequently Asked Questions

Bosch induction hob E1 error after installation — what does it mean?

E1 at first use often means the ventilation gap was not installed correctly.
Check the minimum clearance under the hob matches the installation guide.
Insufficient airflow triggers E1 quickly under load.

Bosch induction hob E1 only on certain zones — what is the cause?

A zone-specific E1 suggests a fault in the IGBT driver for that zone rather than a general power or cooling issue.
This usually requires a service engineer to diagnose and replace the zone board.

Is Bosch induction hob error E1 covered under warranty?

Yes, if the hob is within its warranty period and the fault is not installation-related (e.g. insufficient ventilation gap), Bosch will repair or replace it.
Register your appliance at the Bosch website to confirm warranty status.