Maytag Dishwasher Error Code 6-6

The 6-6 code means the dishwasher has detected that incoming water is below 84°F (29°C), or the control board has disabled the heater after detecting a water heating problem. It can point to a simple hot water supply issue or a fault in the temperature sensing circuit. Checking your water supply temperature is the recommended first step.

Running the dishwasher with code 6-6 active means wash cycles may complete without adequately heated water, which can reduce cleaning and sanitizing performance. The control may also have disabled the heater entirely as a protective measure. It is best to resolve the underlying cause before running full cycles to ensure proper operation.

Resetting the dishwasher by disconnecting power for a few minutes may temporarily clear the code, but it will return if the underlying problem is not corrected. If incoming water temperature is the cause, ensuring adequately hot water before the next cycle may resolve it. If a faulty thermistor or wiring issue is responsible, the code will reappear until those components are repaired or replaced.

Start by confirming your home water heater is set to at least 120°F (49°C) and that the dishwasher is connected to the hot water supply line. Run hot water at a nearby sink for about a minute before starting the dishwasher to clear cold water from the supply line. If the code persists, disconnect power and inspect the temperature sensing circuit wiring and connections, then test the thermistor resistance to determine if the sensor has failed.

If the issue is simply a low water heater setting or a cold supply line connection, there is no parts cost involved. If the thermistor has failed, replacement sensor parts typically range from $15 to $60 depending on the model and supplier. If the control board is determined to be at fault, repair costs can range from $100 to $300 or more for parts and labor.