Dacor Range Error Code F31

F31 on a Dacor range indicates an open circuit in the oven temperature sensor or its wiring. The control board cannot detect a valid resistance reading from the sensor, which signals a broken electrical path. The fault points to either a failed sensor probe or a break somewhere in the wiring connecting it to the control board. Normal oven operation is disabled until the issue is resolved.

Resetting the range by cutting power at the breaker may temporarily clear the F31 code, but it will return as soon as the control board attempts to read the sensor again. Because F31 is caused by a physical open circuit in the sensor or its wiring, the underlying hardware problem must be corrected before the fault will stay cleared.

If only the temperature sensor probe needs to be replaced, parts typically run in the range of $30 to $80, with labor adding $100 to $200 if a technician is hired. If the wiring harness is damaged, repair costs can vary depending on whether a full harness or individual wires need replacement. A full service call for this type of repair generally falls in the range of $150 to $350 depending on location and the specific parts required.

Many technicians and knowledgeable DIYers can resolve an F31 error by testing and replacing the temperature sensor or inspecting the wiring harness for damage. Start by using a multimeter to check the resistance of the sensor probe after disconnecting it from the harness. If the sensor reads open, replacing it is a straightforward repair. If the sensor reads correctly, trace and repair or replace the damaged wiring section.

It is not recommended to continue using the oven while the F31 code is active. The control board cannot monitor oven temperature accurately without a functioning sensor, which means it cannot regulate heating safely. Operating the oven in this condition could result in overheating or unpredictable behavior. The fault should be diagnosed and repaired before resuming normal use.