Frigidaire Oven Error Code F31

F31 on a Frigidaire oven indicates a shorted RTD sensor probe or a wiring problem in the probe circuit. The RTD probe is the temperature sensor inside the oven cavity, and the control board detected resistance values outside the acceptable range. The oven will not enter or remain in any active cooking mode while this fault is present. The issue can originate from the probe itself, the wiring, or in some cases the display board.

The oven will block active cooking modes when F31 is present, so in most cases it simply will not heat. It is not advisable to attempt to bypass this fault, as the oven relies on the RTD sensor to regulate temperature accurately. Operating without a reliable temperature reading could result in overheating. Address the fault before resuming normal oven use.

If only the RTD sensor probe needs replacement, the part typically costs between 20 and 60 dollars, making it one of the more affordable oven repairs. If the display board is also faulty, board replacement can add anywhere from 80 to 200 dollars or more depending on the model. Professional labor charges will add to these figures if you hire a technician. Diagnosing the wiring first costs nothing and can sometimes resolve the issue without any parts.

A knowledgeable DIYer can often resolve F31 by testing the RTD sensor probe resistance at room temperature and comparing it to the probe resistance chart. If the resistance does not match, replacing the RTD probe is a straightforward repair. Inspect the wiring and connectors first, since a loose or corroded connection is sometimes the only issue. If the probe and wiring both check out, replacing the display board is the next step and may be better handled by a technician.

Letting the oven cool down and restarting the function may temporarily clear the code, but if the underlying problem is a faulty RTD probe or damaged wiring, the fault will return as soon as an active mode is entered. A reset is a useful first step to confirm the fault is persistent, but it does not fix the root cause. Proper diagnosis of the probe and wiring circuit is necessary for a lasting repair.