E23
Gaggenau
Drain Pump Electrical Failure
Dishwasher shows E23 and will not drain; drain pump may be silent.
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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
Burned-out drain pump motor, wiring harness fault, control board output failure to pump
How to Fix / Troubleshooting
Safety: Disconnect power and be prepared for water spillage.
Steps:
- Check for power to pump: During drain, measure voltage at the pump connector (only if qualified). If voltage is present but pump does not run, the pump is faulty.
- Test pump resistance: With power off, measure resistance across pump terminals. An open circuit indicates a failed motor.
- Inspect wiring: Check the harness from the control to the pump for breaks or burns.
- Replace drain pump: Install a new Gaggenau drain pump if the original is defective.
- Control check: If no voltage is supplied to a known-good pump, the control board may be faulty and require replacement.
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Repair Difficulty
Hard
4/5
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