GE Dishwasher Error Code Not Heating

The Not Heating error means the dishwasher's control board detected that water temperature did not increase by more than 9°F within a 15-minute heating cycle. The board uses the door thermistor to track temperature rise, and when the gain falls short of that threshold, it logs this fault. The most common causes are a failed heating element, a faulty thermistor, or a wiring issue in the heating circuit.

Running the dishwasher with this error is not dangerous in most cases, but your dishes will not be washed or sanitized at the correct temperature. Hot water is essential for dissolving detergent and killing bacteria, so dishes may come out greasy or not properly sanitized. It is best to resolve the fault before relying on the appliance for regular use.

A reset may temporarily clear the error code from the display, but the fault will return if the underlying problem has not been fixed. Because the error triggers when the board detects an actual temperature rise failure during a heating cycle, the condition will reoccur as soon as the dishwasher runs another cycle with the same failed component in place. A proper repair of the heating element, thermistor, or wiring is required to permanently resolve the error.

Many DIYers can resolve this fault by testing and replacing the heating element or door thermistor, both of which are accessible components in most GE dishwasher models. A multimeter is needed to check element continuity and thermistor resistance. If the wiring and components test good, the control board may be the issue, which is a more advanced repair that some homeowners prefer to leave to a technician.

Repair costs vary depending on the failed component. A replacement heating element typically costs between $20 and $60 for the part, while a door thermistor is generally in the $15 to $40 range. If a professional technician is needed, expect to add labor costs of $80 to $150 or more depending on your location and the complexity of the diagnosis.