Error code
Bosch error code E09
Bosch error code E09: the heater inside the heat pump is not behaving as the control expects. What the code covers, what to check first, and what it does not tell you — on dishwashers.
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What we can confirm
Code E09, from the manufacturer's own pages
A code is only meaningful together with the generation showing it — the same two digits mean different things across generations.
The code
E09
The heater inside the heat pump is not behaving as the control expects
or call (305) 783-3552
What it narrows down to
Heat pump heater
What you are probably seeing
Diagnostic
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What it looks like from the kitchen
The symptom this code usually arrives with
A code names the subsystem; the symptom is what sent you to look at the display in the first place. That page says what it usually turns out to be, cheapest cause first.
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Usually not a repair Dishwasher not drying
Plastics coming out wet is how these machines are designed to behave, and it is the single most common reason somebody books a repair on this brand that they do not need. Glassware coming out wet is a different matter.
- Plastics wet, glass and steel dry
- Everything wet, including glass
- Drying noticeably worse than it used to be
In more detail
About Bosch error code E09
What this one means
The heater inside the heat pump is not behaving as the control expects. It is a code the manufacturer publishes for this appliance, not one we have worked out — and it is decoded here rather than left as three characters on a display.
The other ways your machine may say it
The same condition is published under more than one label, because it has been carried across generations of this appliance:
- E09, E20, E2030, E6001 — the same condition, on machines of different ages
- Active and Sanitized lights flashing — how a model with no digital display says it. On that machine, the lights are the code
- Clean and Sanitized lights flashing — how a model with no digital display says it. On that machine, the lights are the code
What the code covers
A published cause names a circuit rather than a component, which is the single most useful thing to know before ordering a part. This one covers:
- The heating element inside the pump assembly
- Its sensor
- The circuit driving it
Worth doing before you call
- Cut power at the breaker for thirty seconds
- Check whether the machine has recently shown a scale code — scale is behind a real share of these
Then what
The heat pump combines circulation and heating in one assembly, so this is the expensive end of the machine. Descaling first is worth it if the machine has been asking for it.
This code is published for dishwashers. The full list of codes has the rest of them, searchable, including the labels older and newer machines use for the same conditions.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards