Lg Oven Error F23

⚡ Quick Answer: The LG oven error F23 indicates a malfunction in the oven temperature sensor, which can lead to incorrect temperature readings and inconsistent cookin... ✅ DIY Fixable

What Does Error F23 Mean?

The LG oven error F23 indicates a malfunction in the oven temperature sensor, which can lead to incorrect temperature readings and inconsistent cooking results. This error may cause the oven to not heat properly or shut off unexpectedly, often appearing during startup or preheating. Possible causes include a faulty temperature sensor circuit, loose wiring connections, or issues with the control panel. Immediate attention to these components is necessary for proper oven functionality.

Common Symptoms:

  • Oven displays F23 and may not heat properly or shut off
  • Oven may not reach or maintain set temperature
  • Error appears shortly after start or during preheat

Possible Causes

  • Oven temperature sensor (thermistor) circuit fault (medium)
  • Loose or damaged wiring/connector between oven sensor and control board (medium)
  • Control panel/touch controller issue affecting error display (low)

How to Fix Error F23

DIY Fix Power Reset the Oven

  1. Turn off and unplug the oven or switch off its breaker.
  2. Wait 5–10 minutes to allow the control board to fully reset.
  3. Restore power and attempt to run the oven again.

DIY Fix Check for Loose Sensor Wiring

  1. Disconnect power at the breaker.
  2. Access the back panel to locate the oven temperature sensor wiring.
  3. Ensure connectors are firmly seated and wiring shows no visible damage.

Technician Only Test and Replace Oven Temperature Sensor

  1. Disconnect power and locate the oven temperature sensor.
  2. Measure sensor resistance at room temperature.
  3. Replace sensor if resistance is significantly outside expected range or intermittent.

Parts needed: oven temperature sensor (thermistor)

Technician Only Inspect and Repair Control Board/Touch Interface

  1. Disconnect all power.
  2. Inspect control panel PCB and touch interface for signs of damage, corrosion, or faulty components.
  3. Repair or replace the affected control board or touch sensor assembly.

Parts needed: display/touch control board or UI assembly

🛑 When to Call a Pro:
  • If the error persists after basic power reset
  • If you are not experienced with internal wiring and sensor testing
  • If visual inspection shows damaged boards or components

Technical Specifications

wattage N/A
component Oven Temperature Sensor
resistance 1,000-1,200 ohms
part_number LG EBF49827801
voltage_rating 120V AC

Common Questions

What does F23 error mean on LG oven?

F23 indicates a malfunction in the oven temperature sensor, causing erratic heating.

Can I fix LG oven F23 error myself?

Yes, you can perform a power reset and check for loose sensor wiring.

How much does it cost to fix F23 error?

Repair costs range from $30 to $120 depending on the required parts.

When should I call a technician for F23?

Call a technician if the error persists after a reset or if you're not comfortable with wiring.

Data last verified: 2026-01-11

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