Bosch E09 Dishwasher — Fix
On Bosch dishwashers, the E09 code means a fault in the heating element (flow-through heater) — the water isn't being heated.
- Applies to
- Bosch appliances
- Time to fix
- 30 minutes – 1 hour
What it means
Causes include a failed heating element/heat pump, wiring faults, or a control problem. This is a Bosch appliance fault code shown on the display. Codes can vary by model and appliance type, so always confirm against your specific model's manual or tech sheet. Unplug the appliance before any internal checks.
Symptoms
- E09 on the display
- Dishes not drying/cleaning well; cold water
How to fix it
- 1
Test the heater
1. Have the flow-through heater/heat pump checked for continuity.
- 2
Replace the heater
1. Replace a failed heating element/heat pump.
Frequently asked questions
What does Bosch E09 mean?
The heating element (heat pump) isn't heating the water. It usually needs testing and replacing.
Last updated July 20, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.