GE Dishwasher C6 error code
C6 means the water temperature entering the dishwasher is too low. Dishwashers need incoming water of at least 120°F to clean and sanitize properly. Cold inlet water extends the cycle, wastes energy, and can trigger this code.
Last updated: September 30, 2026
What causes the C6 error?
- Cold water sitting in the hot water line feeding the dishwasher
- Water heater set below 120°F
- Other hot water use in the home competing during the cycle
How to fix GE C6 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Run the hot faucet first
Run the faucet next to the dishwasher until the water runs hot before starting the dishwasher, so the machine fills with hot water instead of cold standing in the line. - Raise the water heater setting
Adjust the water heater so it delivers water of at least 120°F to the dishwasher.Safety warning: Do not set the water heater above 140°F — hotter water is a scalding risk. - Avoid competing hot water use
Do not run the washing machine, take showers, or draw hot water elsewhere while the dishwasher is running, and use heated dry or sanitize options so the machine adds more heat.
When to call a technician
- C6 persists even though hot water is reaching the dishwasher normally
Frequently asked questions
What does C6 mean on a GE dishwasher?
C6 means the water coming into the dishwasher is too cold. GE says incoming water should be at least 120°F, and running the adjacent hot faucet before starting usually fixes it.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.