GE dishwasher C6: incoming water temperature too low
GE Appliances says C6 means incoming water temperature is too low and recommends at least 120°F at the dishwasher supply.
What this guide covers
Error codes: C6
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 whether hot water is availableGE recommends purging cold water from the adjacent faucet and an incoming temperature of at least 120°F.
What the answers can lead to
Restore an appropriate hot-water supply before retrying
Cold incoming water can trigger C6.
Evidence strength: Strong
C6 persists even with normal incoming hot water
A persistent temperature-sensing condition needs service.
Evidence strength: Strong
When professional diagnosis is the safer next step
A persistent temperature-sensing condition needs service.
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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