GE dishwasher not draining / FTD / F56 / C3
GE drain guidance starts with filters/sump, installation/drain path, and detergent/sudsing before service.
What this guide covers
Error codes: FTD, F56, C3 · Symptoms: Won’t drain / standing water
This guide follows a structured decision tree built from manufacturer troubleshooting information. It does not assume that the most commonly replaced part is the failed part, and it does not show an exact-fit replacement part unless model compatibility has been independently verified.
Continue this exact diagnostic
Safe troubleshooting sequence
Start with the observations and external checks that can be verified without opening energized assemblies. The interactive version asks these in order and changes the path based on your answers.
- Check the filter and sump areaFood debris or an obstructed filter/sump can prevent normal draining.
- Check the sink/disposer connectionA missing high loop/air gap or an unremoved disposer knockout plug can block drainage after installation work.
- Verify the new drain connectionA new disposer must have its dishwasher drain knockout plug removed, and the drain hose must be installed as specified.
- Check for oversudsingWrong or excessive detergent can interfere with draining.
What the answers can lead to
Clean the filters and visible sump area
A blocked filter or sump can prevent the dishwasher from draining.
Evidence strength: Strong
Correct the dishwasher drain installation
An incorrect drain connection can prevent pump-out.
Evidence strength: Strong
Correct the detergent problem
Excess suds can prevent normal dishwasher draining.
Evidence strength: Strong
Reviewed drain checks are exhausted
Pump, drain valve, sensor, control, wiring, or model-specific service may be needed.
Evidence strength: Moderate
When professional diagnosis is the safer next step
Pump, drain valve, sensor, control, wiring, or model-specific service may be needed.
Appliance Verdict stops before energized electrical testing, gas-system work, sealed-system work, and other checks that can create unnecessary risk. A technician can use the model, issue, and completed checks from the interactive diagnostic as a starting point.
Repair or replace?
A diagnosis and a repair decision are different questions. Once you have a real repair quote, compare the total repair cost with the all-in price of a comparable replacement. Warranty or protection-plan coverage, appliance age, reliability history, efficiency, and likely future repairs can all matter. Appliance Verdict’s interactive result includes a transparent cost comparison rather than a black-box replacement recommendation.
Manufacturer sources
Dataset reviewed through 2026-09-11. Appliance Verdict is independent and is not endorsed by the manufacturers cited. Always follow the exact owner or service documentation for your model.
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