E20
Gaggenau
Circulation Pump Motor Fault
Dishwasher shows E20 and may have issues with circulation or unusual pump noise.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Seized circulation pump, foreign object in impeller, motor winding failure, wiring fault to pump
How to Fix / Troubleshooting
Safety: Disconnect power and water. Be prepared for residual water in the base.
Steps:
- Listen during wash: A loud humming without water movement suggests a jammed or failed pump.
- Access pump: Remove the base cover to reach the circulation pump assembly.
- Check for obstructions: Remove the pump housing and inspect the impeller for glass, bones, or other debris. Remove any foreign objects.
- Test motor: Measure resistance of the motor windings and compare to specs. A short or open indicates a bad motor.
- Replace pump assembly: If the motor is defective or the impeller is damaged, replace the complete circulation pump assembly with the correct Gaggenau part.
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Repair Difficulty
Hard
4/5
Required Part
Circulation Pump Assembly
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