Bosch Dishwasher Error E01
⚡ Quick Answer: The Bosch dishwasher E01 error code indicates a heating system or pump control circuit fault. This error typically interrupts operation and is charact... ✅ DIY Fixable
What Does Error E01 Mean?
The Bosch dishwasher E01 error code indicates a heating system or pump control circuit fault. This error typically interrupts operation and is characterized by the dishwasher stopping mid-cycle or failing to heat water. The main control board detects an issue with the heat pump motor circuit, which can also lead to a humming sound during operation. Immediate troubleshooting is recommended to ensure proper water supply and check for any visible wiring issues.
Common Symptoms:
- Dishwasher stops mid-cycle or won’t start
- Dishwasher fails to heat water
- E01 code appears on display immediately or during cycle
Possible Causes
- Heat pump motor circuit fault at main control board (high)
- Faulty wiring or connection to heating/heat pump components (medium)
- Defective heating element or associated components (medium)
How to Fix Error E01
DIY Fix Basic checks and resets
- Turn off dishwasher and reset power at circuit breaker for ~30 seconds
- Ensure water supply is on and normal pressure
- Verify no visible kinks or blockages in inlet hose
- Rerun a wash cycle to see if code clears
Technician Only Inspect and repair internal electrical components
- Disconnect power and access the control board area
- Inspect heat pump circuit wiring and connectors for damage or loose connections
- Test control board outputs for proper voltage to heat pump/heating elements
- Replace control board or faulty connectors as needed
Parts needed: Main control board, Wire harness/connectors, Heat pump or heating element components if faulty
- If internal inspection indicates visible control board damage (burnt components)
- If the error persists after wiring and basic electrical checks
- If you are not experienced with appliance electrical systems
Next step
Choose the next step for E01
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
- Typical part-only price
- $120 - $280
- DIY difficulty
- Medium
- Estimated time
- 20-40 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
Heating Element
Heats the water or air inside the appliance to the required temperature.
Model-compatible Dishwasher parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Dishwasher Cleaner and Descaler
Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.
Braided Dishwasher Inlet Hose
For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | 15W |
|---|---|
| component | Water Inlet Valve |
| resistance | 10-20 ohms |
| part_number | Bosch 00440056 |
| voltage_rating | 120V AC |
Common Questions
What does E01 error mean on Bosch dishwasher?
E01 error indicates a heating system fault, often causing the dishwasher to stop mid-cycle or fail to heat water.
Can I fix Bosch dishwasher E01 error myself?
Yes, you can perform basic checks like resetting the power and verifying the water supply.
How much does it cost to fix E01 error?
The estimated cost to fix the E01 error ranges from $150 to $400, depending on parts and labor.
When should I call a technician for E01?
Call a technician if there is visible control board damage or if the error persists after basic checks.
Sources & References
Data last verified: 2026-07-25
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