KitchenAid Dishwasher Error Code F6E6 — Incoming Water Too Cold
What this means
Error code F6E6 indicates the water entering the dishwasher is below the minimum temperature threshold (typically below 110 degrees F). Dishwashers require hot water to properly dissolve detergent and sanitize dishes. This can be caused by a water heater set too low, long pipe runs allowing water to cool before reaching the dishwasher, or a faulty thermistor sensor giving incorrect readings.
Alternate codes: F6 E6, 6-6
Step-by-step fix
4 stepsRun the kitchen hot water tap
Before starting the dishwasher, run the hot water at the kitchen sink faucet until it is consistently hot. This purges cold water from the pipes leading to the dishwasher.
This is especially important if the dishwasher is far from the water heater or hasn't been used recently.
Check water heater temperature
Verify your home water heater is set to at least 120 degrees F. Adjust the thermostat if it is set too low.
You can test the water temperature at the sink with a thermometer — it should be at least 120 degrees F.
Start a new cycle
After running hot water at the sink, start the dishwasher immediately. Select a cycle with a heated wash option if available.
The Hi-Temp Wash option will use the internal heater to boost water temperature during the cycle.
Check the thermistor if error persists
If the error continues despite confirmed hot water supply, the internal thermistor sensor may be giving false readings and may need replacement.
A faulty thermistor will need professional diagnosis with a multimeter to confirm.
When to call a professional
If your water heater is set correctly and hot water is reaching the dishwasher but the error persists, the thermistor sensor may be faulty and requires professional diagnosis.
Related error codes
The water temperature sensor (thermistor) or optical water indicator sensor has failed.
Advanced · 30–45 minutes
The thermistor or OWI sensor has a short circuit or failed calibration.
Advanced · 30–45 minutes
The dishwasher's heating element is not working, so water cannot be heated properly.
Advanced · 30–60 minutes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Thermistor Sensor
Part #WPW10467289 · $20–$40
Required only if sensor gives false temperature readings
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