Bosch Induction Hob Error E6 — How to Fix It

What it means

Bosch induction hob error E6 indicates a cooling fan fault or overheating of the electronics.
Switch the hob off at the power supply, allow it to cool, and check that ventilation under the hob is not blocked.

How to Fix It

Switch off and let the hob cool fully

Press the on/off button to switch off the hob, then cut power at the wall socket or circuit breaker.
Allow at least 20 minutes of cooling before restarting.
E6 will not clear while the electronics are hot.
Check the underside ventilation

Bosch induction hobs have a cooling fan that pulls air through the base.
Ensure the ventilation gap beneath the hob (as specified in the installation manual) is clear and unobstructed by shelf materials or insulation.
Remove any items stored directly under the hob

Pots, pans, or trays stored in a drawer directly below the hob can block the airflow duct.
Remove them and leave at least the minimum clearance specified in the installation guide.
Listen for the cooling fan on restart

When you switch the hob on, you should hear the cooling fan running.
If there is no fan sound or you hear a grinding noise, the fan has failed and requires professional replacement.
Avoid prolonged high-power cooking sessions

Running all four zones at maximum power for extended periods can overwhelm the cooling system.
Reduce power levels or pause cooking to allow the electronics to cool between sessions.
Book a service engineer if E6 persists

A persistent E6 after cooling and ventilation checks indicates the cooling fan motor has failed or a temperature sensor is faulty.
This requires an engineer — the cooling fan is not user-serviceable.

Frequently Asked Questions

Bosch induction hob E6 error during summer only — why?

In hot ambient conditions, the hob electronics heat up faster and the cooling fan has less thermal headroom.
E6 in summer is often an installation issue — verify the ventilation gap meets the minimum requirement.

Bosch induction hob makes a loud noise under the counter — is that the fan?

Yes.
The cooling fan under a built-in induction hob can be audible during and after cooking.
A loud grinding or rattling noise from the fan means the fan motor is wearing out.

Bosch induction hob E6 after fitting a new worktop — connected to the installation?

Very likely.
A new worktop with a tighter cut-out or different cabinet configuration may have reduced the ventilation gap below the minimum requirement.
Check the gap and adjust the installation accordingly.