GE · Oven Moderate

F3 — / F4 — Oven Sensor Needs Replacement

F3 and F4 both mean the oven sensor needs to be replaced — the control cannot get a valid reading from the oven temperature sensor circuit.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Typical cost
$15-30
Verified against
products.geappliances.com ↗

The fix

Oven temperature sensor (RTD probe)

Open oven temperature sensor circuit

$15-30 easy difficulty 30 min Tools: screwdriver, nut driver, multimeter

Diagnose first: Indicates open circuit in sensor or its harness. Test sensor for ~1080 ohms at room temp; check harness continuity from sensor to control board.

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Didn't resolve it? Next suspect: Oven sensor wire harness ($20-50)

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How to fix it

  1. Unplug the oven.
  2. Inspect the sensor harness connector at the rear for looseness, corrosion, or damage.
  3. If the connector is good, replace the oven temperature sensor — GE's guidance is that the sensor needs replacement for this code.

Why it happens

Typical signs: Oven will not heat or heats wrong · F3 or F4 on the display

  • Failed oven sensor (RTD) GE's guidance is that the oven sensor needs to be replaced when this code appears.
  • Damaged sensor wiring/connector A burnt or loose connector behind the oven.

Related repair guides

How to Replace an Oven Bake Element →How to Test an Oven Temperature Sensor (RTD) →Oven Not Heating or Not Reaching Temperature →Oven Temperature Is Off — How to Calibrate It →

More GE oven codes

dF dF — Door Latch Switch Fault F0 Range/Oven F0 — Keypanel Problem F1 F1 — Keypanel (Touchpad) Problem F2 F2 — Oven Over-Temperature F30 F30 — Oven Temperature Sensor Circuit Open F31 F31 — Oven Temperature Sensor (RTD) Open

All GE codes → All oven codes →

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: products.geappliances.com.