Frigidaire · Oven Serious

F91 — Door Lock Motor Direction / Mechanism Fault

Variant of the F90 family — the lock motor moved but the switches reported an unexpected state (e.g. unlock signal during a lock command). Common on self-clean ranges with a motorized latch.

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

How to fix it

  1. Disconnect power.
  2. Inspect the latch microswitches and their actuator tabs for wear or bent metal.
  3. Cycle the latch manually and listen for clean switch clicks.
  4. Replace the entire door lock assembly if any switch is intermittent — they're sold as a kit.
  5. Inspect harness routing across the top of the oven for heat damage.

Why it happens

Typical signs: F91 during self-clean lock attempt · Lock motor reverses unexpectedly · Door state on display flickers locked/unlocked

  • Misadjusted or failed latch microswitches Switches contradict each other so the EOC aborts.
  • Worn lock motor gears Motor overshoots and trips the wrong switch.
  • Wiring fault in latch harness Pinched or melted wire in the latch loom.

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 door latch / lock assembly Common replacement
    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 →

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.