Frigidaire Oven F31 Error Code: Causes & Fix

What is the Frigidaire Oven F31 error?#

F31 is the collapsed-low twin of the open-sensor fault: the board sees the probe resistance far below the room-temperature figure, reads that as a wildly hot cavity, and so the oven balks or trips the instant a bake is started. The tell versus an open sensor is which way the reading breaks — here it crushes low, so the control thinks the oven is already scorching. Metering the probe alone tells you whether the sensor shorted internally or a grounded lead is to blame.

F31 on a Frigidaire Oven: likely causes and repair cost#

On a Frigidaire Oven, the F31 code signals: shorted oven temperature sensor.

Typical professional repair: $50–$175 · Difficulty: moderate · often owner-fixable

Symptoms that often accompany F31: Oven quits the instant a bake is started; Temperature readout jumping around erratically; Panel acting like the cavity is maxed out while stone cold

Technician diagnostic sequence for F31:

1. F31 is the collapsed-low twin of the open-sensor fault: here the board sees resistance far below the room-temperature figure, which it interprets as a wildly hot cavity, so the oven balks or trips instantly
2. Kill power and meter the probe across its pins — a reading crushed down toward a handful of ohms confirms the element has shorted inside and the probe is done
3. If the probe meters correctly once unplugged from its lead, the short lives in the wiring: hunt for melted or pinched insulation where the run grazes the hot cavity wall and grounds out
4. Dry and inspect the connector shell too, because condensate bridging two pins mimics a shorted probe until the plug dries out

Parts a technician may check or replace: oven temperature sensor

Field note: The tell of a short versus an open is which way the reading breaks: F31 collapses the resistance low so the board thinks the oven is already scorching and refuses to fire. Unplug and meter the probe alone — a normal reading there pins the blame on a grounded lead, not the sensor.

How to troubleshoot the F31 error yourself#

The homeowner-safe checks are the connector and a look for obvious wiring damage; the meter work is a technician’s. Unplug the range and dry and inspect the sensor connector shell, because condensate bridging two pins mimics a shorted probe until the plug dries out. If the fault stays, the diagnosis is a resistance test: the probe is metered across its pins, and a reading crushed toward a handful of ohms confirms the element has shorted internally and the probe is done. If the probe meters correctly once unplugged from its lead, the short lives in the wiring — a technician hunts for melted or pinched insulation where the run grazes the hot cavity wall and grounds out. A shorted probe or a grounded lead are both inexpensive fixes, but the metering and any wiring repair belong to a technician working on an unplugged range.

Is the Frigidaire Oven F31 error worth fixing?#

Like its open-sensor sibling, F31 is a cheap fix. The oven temperature sensor is a low-cost part, and a professional repair runs $50 to $175 — and if it is a grounded lead rather than the probe, sometimes less. That is minor against a new range, so F31 is worth repairing on essentially any working oven. I cannot construct a sensible replace-the-oven case around a single shorted sensor or a pinched lead; it is a small, high-value repair that restores the oven to full service.