Thermador Dishwasher Error E23
⚡ Quick Answer: The Thermador dishwasher E23 error indicates a malfunction in the drain pump, which may be blocked, clogged, or defective. This error often results in... ✅ DIY Fixable
What Does Error E23 Mean?
The Thermador dishwasher E23 error indicates a malfunction in the drain pump, which may be blocked, clogged, or defective. This error often results in unusual noises during operation and failure to properly drain water. To resolve it, check for clogs in the filter and drain area, as these are common causes of this issue.
Common Symptoms:
- Dishwasher displays E23 on the control panel
- Dishwasher fails to drain water or shows drainage issues
Possible Causes
- Drain pump blockage or clog (high)
- Faulty or malfunctioning drain pump (high)
How to Fix Error E23
DIY Fix Check and clear debris from filter and drain area
- Turn off and disconnect the dishwasher from power
- Remove the bottom rack to access the dishwasher filter
- Take out and clean the filter under running water to remove food debris
- Remove the pump cover beneath the filter and check for visible obstructions
- Carefully remove any debris around the drain pump impeller
- Reassemble components and test the dishwasher
Technician Only Inspect drain pump and replace if defective
- Disconnect power and water supply
- Remove the dishwasher kickplate or access panel
- Inspect the drain pump for mechanical damage or electrical faults
- Test the drain pump motor and impeller function
- Replace the drain pump if it does not operate correctly
- Reassemble the unit and verify the error code no longer appears
Parts needed: Drain pump assembly
- If the error persists after clearing debris or if the drain pump appears to be malfunctioning
- If you are uncomfortable accessing internal components
Next step
Choose the next step for E23
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
Drain Pump
Pumps waste water out of the appliance during the drain cycle.
- Typical part-only price
- $35 - $80
- DIY difficulty
- Easy
- Estimated time
- 15-30 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.
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 | 50W |
|---|---|
| component | Drain Pump Assembly |
| resistance | 10-15 ohms |
| part_number | Thermador 00726245 |
| voltage_rating | 120V AC |
Common Questions
What does E23 error mean on Thermador dishwasher?
E23 indicates a drain pump malfunction, often due to blockages or defects, preventing proper water drainage.
Can I fix Thermador dishwasher E23 error myself?
Yes, you can check and clear debris from the filter and drain area to potentially resolve the issue.
How much does it cost to fix E23 error?
Repair costs for the E23 error range from $100 to $300, depending on parts and labor.
When should I call a technician for E23?
Call a technician if the error persists after clearing debris or if you are uncomfortable accessing internal components.
Sources & References
Data last verified: 2026-07-25
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