Frigidaire Oven F5 error code
The oven control's internal watchdog detected a failure. The electronic oven control (EOC) board itself is faulty.
Also shown as: F5
Last updated: October 6, 2026
What causes the F5 error?
- Failed relay check inside the electronic oven control
- Microprocessor watchdog detecting an internal fault
- Power surge damaging the control
- Failing electronic oven control (EOC) board
How to fix Frigidaire F5 — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Power-reset once to confirm
Turn off the oven's breaker, wait 30 seconds, and turn it back on. If F5 returns on power-up, the internal fault is confirmed and the board needs service. - Note any recent power events
If F5 appeared right after a storm or outage, tell your technician. Surge damage is a common cause, and a surge protector on the range circuit helps prevent a repeat. - Do not keep using the oven
Do not keep resetting and cooking with an F5 code. The control has failed its own safety checks, and continuing to use it risks uncontrolled heating.Safety warning: Stop using the oven if F5 persists. A failed control board is a fire risk. - Call a technician for EOC replacement
F5 requires the electronic oven control to be replaced or professionally rebuilt. This is technician work involving line voltage and control wiring.
When to call a technician
- F5 returns after a power reset
- The oven behaves erratically or heats unpredictably
- The EOC needs replacement or rebuild
- A power surge damaged the control
Frequently asked questions
F5 vs F1: what is the difference?
F5 is an internal control failure: the board's own watchdog caught a fault in its relay or processor checks. F1 is also a control failure on some versions; both usually end in board replacement.
What is the watchdog circuit?
The watchdog is a self-check circuit inside the control. When it detects the board misbehaving, it shuts things down and logs F5 rather than risk uncontrolled heating.
Can a reset fix F5?
Rarely. F5 means the board failed its own internal checks, which is almost never a glitch. Plan on board service.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.