KitchenAid Dishwasher Error Code 6-6

The 6-6 code means the dishwasher detected incoming water below 84°F (29°C) at the start of or during a cycle. The appliance monitors incoming water temperature through its Temperature Sensing Circuit and requires adequately hot water for proper wash performance. This code most often points to a supply-side issue, such as cold water sitting in the line, rather than a failed component. Confirming hot water supply and running the sink tap before starting the cycle will often clear the fault.

A reset may temporarily clear the code, but it will return if the underlying cause is not addressed. If the incoming water is still too cold when the next cycle begins, the sensor will detect it again and re-trigger the fault. Resolving the water supply issue or repairing the temperature sensing circuit is necessary for a permanent fix.

If the fix is simply adjusting the water heater setting or running hot water before starting the machine, there is no parts cost at all. If the OWI sensor needs to be replaced, parts typically range from $30 to $80 depending on the model, with professional labor adding $100 to $200 or more depending on your area. Checking connections and testing the circuit yourself before scheduling a service call can help avoid unnecessary expense.

Start by running the hot water at your kitchen sink for about a minute before starting the dishwasher. This purges cold water from the supply line so hot water reaches the unit immediately. Also confirm the dishwasher is connected to the hot water supply valve and that your water heater is set to at least 120°F (49°C). If the code returns after these steps, the OWI sensor or its wiring circuit may need to be tested and potentially replaced.

The 6-6 code itself does not indicate a safety hazard, but running cycles with water that is too cool will result in poor cleaning and sanitization performance. Detergent also activates less effectively in cold water. It is best to resolve the cause of the code before continuing regular use.