What to check, in order
- Switch it off
There's nothing to try at home, and Bosch gives no self-help steps for this code.
- Book a repair
An engineer will typically test the heating element and its temperature sensor.
When to call an engineer
Straight away. Bosch's only advice is to contact customer service.
A repair visit will usually check the heating element, its temperature sensor and the wiring back to the control board.
Before you book
- Note the model and serial number. They're on a label inside the door, around the door frame or on the back.
- Write down the exact code, and what the appliance was doing when it appeared.
- Check whether it's still under warranty. If it is, the repair may cost you nothing.
Checked against
Last reviewed September 2026. Manufacturers update their pages, and your manual is the final word.