GE Oven/Range F3 Error Code: Causes, Cost & Fix

What is the GE Oven/Range F3 error?#

F3 on a GE oven or range means the oven temperature sensor — the RTD probe — reads as an open circuit, so the control has no valid temperature and refuses to heat. It is not dangerous, just disabling: the display may show a temperature while the cavity stays stone cold. The first thing to check is the sensor connector at the back of the range, since a plug shaken loose is an easy and common cause of an open reading.

F3 on a GE Oven/Range: likely causes and repair cost#

On a GE Oven/Range, the F3 code signals: open oven sensor rtd.

Typical professional repair: $100–$250 · Difficulty: moderate · usually a technician job

Symptoms that often accompany F3: Oven will not heat; Display shows temperature but oven stays cold; F3 appears during self-clean cycle

Technician diagnostic sequence for F3:

1. Power off at breaker
2. Locate oven sensor probe at the top-rear of the oven cavity
3. Check sensor connector at the back of the range — reseat if loose
4. Measure sensor resistance at connector (expect ~1080 ohms at room temp)
5. If resistance reads open (OL/infinite), the sensor or wiring is broken
6. Trace wiring from sensor to ERC for breaks — replace sensor if element is open

Parts a technician may check or replace: oven temperature sensor; sensor wiring harness

Field note: F3 (open) and F4 (shorted) both point to the same sensor but indicate opposite failure modes. If you get both codes alternating, the wiring has an intermittent break — flex the harness while measuring resistance to find the break point.

Safety note: Self-clean cycles stress the sensor at 900F+ — if F3 appeared during or after self-clean, the sensor likely failed from thermal fatigue. Common on units over 5 years old.

How to troubleshoot the F3 error yourself#

F3 is one of the more DIY-friendly oven codes because it points squarely at one inexpensive part. With power off at the breaker, find the sensor probe at the top-rear of the oven cavity and trace its connector to the back of the range; reseat it if it is loose. Then measure the sensor's resistance at the connector — a good probe reads roughly 1080 ohms at room temperature, and a reading of open or infinite confirms the sensor or its wiring is broken. It is worth knowing that F3 (open) and its shorted-sensor counterpart, F4, describe opposite failures of the same probe, so if the two codes alternate you are chasing an intermittent break in the harness rather than a dead element — flex the wiring while measuring to find it. Swapping the sensor is within reach for a confident owner, but if the resistance tests fine and F3 persists, the wiring run to the board needs tracing, which is a technician job.

Is the GE Oven/Range F3 error worth fixing?#

F3 is almost always worth fixing, and it is the cheapest of the sensor-related oven codes to address. GE lists the repair at $100 to $250, largely because the oven sensor is an affordable part and the labor is modest — a small fraction of a comparable new range. Unless the range is very old and F3 arrives alongside other failures, there is no scenario where replacing the whole appliance beats a $100–$250 sensor repair. Fix it and keep cooking.

GE Oven/Range F3: frequently asked questions#

What does the F3 error mean on a GE oven?

F3 means the oven sensor (RTD) reads as an open circuit. Without a valid temperature signal the control refuses to heat, so the oven stays cold even though the display works.

Is it safe to keep using a GE oven showing F3?

It poses no hazard, but the oven will not heat, so it is effectively out of service until the sensor or its wiring is repaired.

Can I clear the F3 error myself?

Often. Reseat the sensor connector and measure the probe — about 1080 ohms at room temperature is healthy; open means replace it. Persistent F3 after a good sensor needs wiring diagnosis.

How much does it cost to repair the F3 error?

An F3 open-sensor repair on a GE range typically costs $100 to $250, covering the temperature sensor and labor.

Which parts usually fail when an oven throws F3?

A broken sensor wire is the most common cause, followed by a disconnected sensor plug, with an internally failed sensor element the less common culprit.

Why does a broken sensor wire trigger F3?

The control expects a finite resistance from the sensor. A broken wire makes that resistance read infinite — an open circuit — so the board posts F3 and blocks heating.