Thermador Dishwasher E04 Error Code

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What it means

The dishwasher detected faulty heater electronics during its self-test.

Try this first

Turn the dishwasher off.
Contact Thermador support or qualified service.

Can I keep using it?🔴 Heater electronics fault

Repair usually required?🔴 Service recommended

If the error keeps returning

If the condition returns after troubleshooting, qualified service may be required.

Official source

Troubleshooting information verified against manufacturer support documentation.

View manufacturer support page →

Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.

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Related fault codes

These Thermador Dishwasher codes use the same troubleshooting path in the available guidance. Check the exact code shown on your appliance because the affected part or model-specific procedure can still differ.

E0105 error code

Thermador Dishwasher E04: Quick Answer

What it means: The dishwasher detected faulty heater electronics during its self-test.

First thing to check

Turn the dishwasher off.

Can I keep using it?

Heater electronics fault

Repair outlook

Service recommended

If the code remains

If the condition returns after troubleshooting, qualified service may be required.

Model note: Error-code meanings and procedures can vary by model and model year. Confirm the code against the documentation for your exact appliance before replacing parts.

Manufacturer reference: thermador.com