F4 Serious Moderate DIY

Frigidaire Oven F4 — Oven Sensor Shorted

Frigidaire Oven · Error code F4

What F4 Means

Older-style fault: the EOC sees a short circuit at the oven temperature sensor input. Equivalent to F31 on newer boards.

Symptoms

  • F4 during heat call
  • Heat cuts off
  • May follow a recent rack movement that pinched the sensor

Common Causes

1
Shorted oven sensor

Internal short in the probe.

2
Pinched / chafed sensor harness

Wire grounded against the cavity wall.

3
Failed EOC

Less common — input circuit on the board is bad.

How to Fix It

  1. Power off.
  2. Unplug the sensor at the EOC and test resistance — should be ~1080 ohms; near-zero means shorted.
  3. Inspect the sensor harness behind the cavity for pinch points.
  4. Replace sensor and/or repair harness.
  5. If sensor and harness are good, replace the EOC.

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.

Common replacement Frigidaire oven temperature sensor View on Amazon→

More Frigidaire Oven Codes

F0 F0 — Touchpad / Membrane Communication Error F1 F1 — Runaway Temperature / Stuck Key (Older Models) 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 →

Verified against manufacturer documentation: frigidaire.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.