Bosch Oven Error E09 — What It Means & How to Fix It

What Does This Error Mean?

E09 on a Bosch oven means the control panel or touch keypad has a fault. The oven's control board has detected that a button or touch zone is stuck, unresponsive, or sending constant signals. E09 can be caused by moisture on the panel, a genuine button failure, or a touch sensor fault.

Affected Models

Bosch HBG Series (touch control)
Bosch HBA Series
Bosch Series 6 and Series 8 Built-In Ovens
Bosch Serie 4 touch control ovens
Bosch Home Connect WiFi ovens

Common Causes

Moisture or condensation behind the touch panel causing phantom key presses
Grease or food residue on a touch button — causing it to register as permanently pressed
Touch sensor film damaged — a physical defect on the capacitive touch surface
Control panel wiring connector loose — intermittent connection to the board
Main control board fault causing incorrect button signal interpretation

How to Fix It

Switch the oven off at the wall for 5 minutes, then power back on.

Moisture-triggered E09 often clears after a reset once the panel has dried out.
Clean the control panel thoroughly with a dry or slightly damp soft cloth.

Wipe every button and touch zone. Pay attention to any button that looks sticky or has grease around it. Do not spray cleaning products directly onto the panel.
Check whether the oven was exposed to steam — from a kettle, steamer, or pot boiling nearby.

Steam condensing on the touch panel is a common cause of E09. Ensure good kitchen ventilation and avoid positioning steamers directly below the oven control panel.
If E09 persists after cleaning and drying, call Bosch service — the touch panel module needs inspection.

A damaged touch sensor film cannot be repaired — the panel module must be replaced.

When to Call a Professional

If cleaning the panel does not clear E09, the touch panel or control board requires professional inspection. Touch panel replacement is a common repair on older Bosch ovens. Contact Bosch service on 0344 892 8979 (UK).

Frequently Asked Questions

Why does my Bosch oven keep showing E09 after cleaning?

If E09 returns after cleaning, the touch sensor film itself has likely been damaged — either physically or by prolonged moisture exposure. This is a wear-and-tear fault common on ovens over 5 years old with heavy use. Touch panel replacement typically costs £80–180 including the part and technician labour.