Bosch · Dishwasher
E04
Professional service recommendederror code
Bosch E04 means the dishwasher detected faulty heater electronics during self-test.
Market, product family, and model applicability
US · en-US · Bosch dishwashers covered by the cited official US error-code index
product family applicable: The official source applies at the product-family level. Exact controls can still vary by model.
Check the official model/manual lookup (opens in a new tab)What you can do now
Contact Bosch support.
No consumer action is supported beyond the service boundary below.
Stop and get service when
Bosch directs E04 to customer support.
- Contact Bosch support for E04.
Do not do
Do not access heater electronics, panels, or wiring.
Heater electronics are professional-only.
If the message returns
Contact Bosch support for E04.
Source and scope
Official manufacturer source- Market and locale
- US · en-US
- Product family
- Bosch dishwashers
- Official source last checked
- July 26, 2026
- Review status
- Automated evidence review completed · Owner-delegated approval
Bosch
Bosch Dishwasher Error Codes · Official error-code index
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