Bosch Dishwasher E09 error code
The heat pump's internal heater has a fault, so the dishwasher cannot heat water to the right temperature. Dishes may finish a cycle feeling cold or damp, and drying may be poor.
Also shown as: F09
Last updated: September 30, 2026
What causes the E09 error?
- Internal heater circuit fault in the heat pump
- Control board issue affecting the heater circuit
How to fix Bosch E09 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Power reset
Switch off the circuit breaker for 30 seconds and turn it back on to see if the code clears.Safety warning: Handle the breaker panel with dry hands. - Contact Bosch support
If the code returns, call Bosch Customer Support at 1-800-944-2904. Heater repairs involve high-voltage parts and are a job for a technician.
When to call a technician
- The code reappears after a power reset
- Dishes are cold or wet at the end of cycles
- You notice burning smells or tripped breakers - switch the machine off and call support promptly
Frequently asked questions
Will my Bosch dishwasher still wash with E09?
It may run, but the water will not heat properly, so cleaning and drying suffer. Call for service rather than running cycle after cycle.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.
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