Frigidaire · Oven Serious

F3 — Oven Sensor Open Circuit

F3 is an oven temperature sensor (RTD probe) or wiring fault — open or shorted depending on the model (on many Frigidaire ranges F30 = open RTD and F31 = shorted RTD). The control cannot read a valid oven temperature.

Keep using it?
Limited use only
DIY difficulty
Moderate
Verified against
frigidaire.com ↗

How to fix it

  1. Cut power.
  2. Remove the rear panel; unplug the sensor.
  3. Measure resistance — open = bad sensor.
  4. Replace the sensor and inspect harness routing.
  5. Reassemble and verify F3 is gone before returning to service.

Why it happens

Typical signs: F3 at preheat or shortly after · Oven heat cuts off · Temperature display stuck or wrong

  • Open oven sensor (RTD) Internal element of the sensor probe has broken.
  • Disconnected sensor plug Plug at the rear of the EOC has worked loose.
  • Broken sensor wire Wire severed where it exits the cavity.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Frigidaire oven temperature sensor Common replacement
    Amazon →

Related repair guides

Oven Temperature Is Off — How to Calibrate It →

More Frigidaire oven codes

F0 F0 — Electronic Oven Control (EOC) Failure F1 F1 — Shorted Keypad / Control Failure F10 F10 — Runaway Temperature F11 F11 — Shorted keypad button F12 Range/Oven F12 — Control Microprocessor Fault F13 Range/Oven F13 — Control Memory (EEPROM) Failure

All Frigidaire codes → All oven codes →

Frequently asked questions

What does the F3 code mean on a Frigidaire oven?

F3 is an oven temperature sensor (RTD probe) or wiring fault — open or shorted depending on the model (on many Frigidaire ranges F30 = open RTD and F31 = shorted RTD). The control cannot read a valid oven temperature.

What causes the F3 code on a Frigidaire oven?

Open oven sensor (RTD): Internal element of the sensor probe has broken. Disconnected sensor plug: Plug at the rear of the EOC has worked loose. Broken sensor wire: Wire severed where it exits the cavity.

Is it safe to keep using a Frigidaire oven with a F3 error?

Limited use only. This is rated a serious-severity fault.

How do I fix F3 on a Frigidaire oven?

Cut power. Remove the rear panel; unplug the sensor. Measure resistance — open = bad sensor.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: frigidaire.com.