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

  1. Turn off and disconnect the dishwasher from power
  2. Remove the bottom rack to access the dishwasher filter
  3. Take out and clean the filter under running water to remove food debris
  4. Remove the pump cover beneath the filter and check for visible obstructions
  5. Carefully remove any debris around the drain pump impeller
  6. Reassemble components and test the dishwasher

Technician Only Inspect drain pump and replace if defective

  1. Disconnect power and water supply
  2. Remove the dishwasher kickplate or access panel
  3. Inspect the drain pump for mechanical damage or electrical faults
  4. Test the drain pump motor and impeller function
  5. Replace the drain pump if it does not operate correctly
  6. Reassemble the unit and verify the error code no longer appears

Parts needed: Drain pump assembly

🛑 When to Call a Pro:
  • If the error persists after clearing debris or if the drain pump appears to be malfunctioning
  • If you are uncomfortable accessing internal components

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: 2026-03-25

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