Kenmore Dishwasher Error Code 6-6

Code 6-6 means the dishwasher's control board detected that incoming water temperature is below 18°C (65°F). The machine expects hot water, ideally around 49°C (120°F), and stops the cycle when the temperature sensor reports water that is too cold. This can be caused by cold water sitting in the supply line, an incorrect plumbing connection, or a problem with the temperature sensor itself.

The dishwasher will not complete a normal wash cycle while code 6-6 is active because the control board halts operation when incoming water is too cold. Running the dishwasher with cold water also produces poor cleaning and sanitizing results since detergent activation and grease removal depend on hot water. Resolve the water temperature issue before resuming regular use.

If the code persists after flushing the hot water line at the sink, the temperature sensor itself is the most likely cause. The sensor may be reading incorrectly even when hot water is present. A technician or experienced DIYer can measure resistance across the sensor terminals and compare the reading to the spec for that model. If the resistance is out of range, replacing the sensor should clear the code. Also check the wiring harness connectors at the sensor for corrosion or loose terminals.

Start by running the hot water at your kitchen sink for about 60-90 seconds before starting the dishwasher. This flushes cold standing water out of the supply line so the machine receives water at the correct temperature. Also confirm the dishwasher is connected to the hot water supply line, not the cold. If the code returns after doing both of these, have the temperature sensor and its wiring harness tested for correct resistance values, as the sensor may need replacement.

If the fix is simply running the sink before starting the dishwasher or correcting a plumbing connection, the cost is nothing. If the temperature sensor has failed, the part typically costs $20-$60 depending on the specific Kenmore model, and replacing it is a moderate DIY repair requiring basic tools and accessing the interior of the door or sump area. A service call from a technician to diagnose and replace the sensor generally runs $100-$200 including labor.