Lg Oven Error F90

⚡ Quick Answer: The LG oven error code F90 indicates a malfunction in the door lock motor or door lock system, often causing the oven door to remain locked or fail to... ✅ DIY Fixable

What Does Error F90 Mean?

The LG oven error code F90 indicates a malfunction in the door lock motor or door lock system, often causing the oven door to remain locked or fail to lock during self-cleaning or normal operations. This can prevent the self-clean cycle from starting or completing. Common causes include a failed door lock motor, a jammed door latch, or wiring issues affecting the lock mechanism.

Common Symptoms:

  • Display shows F90 and oven door remains locked or will not lock properly during self‑clean or normal operation.
  • Self‑clean cycle may not start or complete because the door lock mechanism cannot engage or disengage.

Possible Causes

  • Failed door lock motor or actuator (medium)
  • Jammed or broken door latch / mechanical linkage (medium)
  • Wiring connection issue to door lock motor (medium)

How to Fix Error F90

DIY Fix Power reset and basic check

  1. Turn off the oven and cut power at the breaker or unplug it.
  2. Wait for at least 5 minutes to allow any thermal interlocks and electronics to reset.
  3. Restore power and try a simple cycle to see if the code clears.

Technician Only Inspect and repair door lock assembly

  1. Disconnect power to the oven at the breaker.
  2. Remove necessary panels to access the door lock motor and latch linkage.
  3. Visually inspect the door lock motor, linkage, and latch for signs of damage or seizure.
  4. Test the door lock motor for continuity and operation; replace the motor if it fails.
  5. Check wiring harness and connectors for corrosion, damage, or loose connections and repair as needed.
  6. Reassemble and verify operation, ensuring the door locks and unlocks correctly.

Parts needed: Oven door lock motor assembly, Lock linkage parts, Wiring harness/connectors

🛑 When to Call a Pro:
  • If power reset does not clear the F90 code.
  • If the door remains locked or the lock mechanism does not respond after basic checks.
  • If you observe electrical burning smells, smoke, or other hazard signs around the lock assembly.

Technical Specifications

wattage N/A
component Oven Temperature Sensor
resistance 1,000-1,200 ohms
part_number LG 6323B61000B
voltage_rating 120V AC

Common Questions

What does F90 error mean on LG oven?

F90 indicates a malfunction in the door lock system, causing the door to stay locked or not engage properly.

Can I fix LG oven F90 error myself?

Yes, you can perform a power reset by turning off the oven and cutting power for 5 minutes to see if the code clears.

How much does it cost to fix F90 error?

Repair costs for the F90 error range from $80 to $300, depending on parts and labor in your region.

When should I call a technician for F90?

Call a technician if the power reset doesn't work, the door remains locked, or if you notice burning smells around the lock assembly.

Data last verified: 2026-01-10

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