GE · Oven Moderate

F91 — Lock Motor Direction / Drive Fault

Door lock motor failed to drive the cam in the correct direction within the expected time. Self-clean is blocked.

Keep using it?
Yes, with caution
DIY difficulty
Hard
Verified against
geappliances.com ↗

How to fix it

  1. Power off at the breaker.
  2. Access the door lock assembly and try moving the cam by hand — should rotate smoothly.
  3. Clean debris or grease from cam path.
  4. If the motor runs but cam doesn't move, replace the lock assembly.
  5. If lock assembly is good, replace the control board.

Why it happens

Typical signs: F91 when starting clean cycle · Lock motor runs but cam doesn't move · Clean cycle aborts

  • Worn lock motor gears Motor spins but gear teeth are stripped.
  • Cam binding from grease/debris Cam can't rotate through full travel.
  • Failed control board drive circuit Wrong polarity sent to motor.

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.

  • GE oven door lock assembly Common replacement
    Amazon →

More GE oven codes

F0 Range/Oven F0 — Keypanel Problem F1 F1 — Keypanel (Touchpad) Problem F2 F2 — Oven Over-Temperature F3 F3 / F4 — Oven Sensor Needs Replacement F30 F30 — Oven Temperature Sensor Circuit Open F31 F31 — Oven Temperature Sensor (RTD) Open

All GE codes → All oven codes →

Frequently asked questions

What does the F91 code mean on a GE oven?

Door lock motor failed to drive the cam in the correct direction within the expected time. Self-clean is blocked.

What causes the F91 code on a GE oven?

Worn lock motor gears: Motor spins but gear teeth are stripped. Cam binding from grease/debris: Cam can't rotate through full travel. Failed control board drive circuit: Wrong polarity sent to motor.

Is it safe to keep using a GE oven with a F91 error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix F91 on a GE oven?

Power off at the breaker. Access the door lock assembly and try moving the cam by hand — should rotate smoothly. Clean debris or grease from cam path.

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: geappliances.com.