Jenn-Air Dishwasher Error Code Sanitize LED + Clean LED

This combination of illuminated LEDs indicates a thermistor failure detected during the Field Service Test. The thermistor is the temperature sensor inside the dishwasher tub that monitors water heat throughout each cycle. When its resistance readings fall outside the specified values, the control board logs this fault and displays the error via the Sanitize and Clean LEDs. The dishwasher cannot reliably complete a sanitize cycle until the thermistor circuit is repaired.

A power reset may temporarily clear the displayed fault, but the error will return if the underlying thermistor problem has not been corrected. Because this fault is detected during the Field Service Test, the control board will re-run the diagnostic and re-flag the failure if the thermistor resistance remains out of specification. A lasting fix requires repairing or replacing the faulty component.

If only the thermistor needs replacement, parts costs are typically in the range of $15 to $50 depending on the specific model, with professional labor adding $75 to $200 or more depending on your location and the service provider. If the control board is determined to be at fault, costs rise significantly, often ranging from $150 to $400 or higher for the part alone. Getting a diagnostic estimate before authorizing repairs is always a practical step.

Start by measuring the thermistor resistance with a multimeter. At 77°F the reading should be 10K ohms within plus or minus 3%, and at 140°F it should be 2.4K ohms within plus or minus 6.5%. If the readings are out of range, replace the thermistor. If the thermistor tests correctly, inspect the wiring harness and connectors between the sensor and the control board for damage, corrosion, or loose connections.

Basic wash functions may still operate, but the sanitize feature cannot be trusted to perform correctly without a functioning thermistor. The dishwasher cannot confirm that water is reaching the required sanitization temperature, so dishes will not be reliably sanitized. It is best to avoid using the sanitize cycle until the thermistor circuit has been inspected and repaired.