Liebherr Oven Error F04

⚡ Quick Answer: The Liebherr oven error F04 indicates a malfunction in the cavity temperature sensor circuit, typically caused by a short or damaged wiring. This faul... ✅ DIY Fixable

What Does Error F04 Mean?

The Liebherr oven error F04 indicates a malfunction in the cavity temperature sensor circuit, typically caused by a short or damaged wiring. This fault prevents the oven from heating properly, while the cooling fan may continue to operate. Addressing this issue often involves inspecting and potentially replacing the temperature sensor or repairing any faulty wiring connections.

Common Symptoms:

  • Oven displays F04/F4 on panel
  • Heating stops or oven fails to heat
  • Cooling fan may still run

Possible Causes

  • Shorted or internally defective cavity temperature sensor (NTC) (medium)
  • Damaged sensor wiring or connector short (medium)

How to Fix Error F04

DIY Fix Power Cycle and Basic Check

  1. Turn off the oven and disconnect from mains power.
  2. Wait 1–2 minutes, then reconnect power and see if the error clears.
  3. Ensure oven racks or items aren’t interfering with internal sensors.

Technician Only Inspect and Replace Temperature Sensor

  1. Disconnect oven from mains power.
  2. Access the cavity temperature sensor (usually located at rear of oven cavity).
  3. Disconnect sensor from harness and measure resistance at room temperature.
  4. Replace the sensor if resistance is near 0 Ω (shorted) or otherwise out of spec.
  5. Inspect sensor wiring and connector for damage; repair or replace as needed.
  6. Reconnect and test oven function.

Parts needed: Oven cavity temperature sensor (NTC probe), Sensor harness or connector if damaged

🛑 When to Call a Pro:
  • If error persists after sensor replacement and wiring check
  • If accessing internal components poses safety risk

Next step

Choose the next step for F04

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Based on diagnostic data

Most relevant component to inspect

Temperature Sensor

Monitors the internal temperature to ensure correct operation and prevent overheating.

Typical part-only price
$15 - $35
DIY difficulty
Easy
Estimated time
15-30 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

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Technical Specifications

wattage 2000W
component Heating Element
resistance 10-30 ohms
part_number Liebherr 900123456
voltage_rating 240V AC

Common Questions

What does F04 error mean on Liebherr oven?

The F04 error indicates a malfunction in the cavity temperature sensor, preventing proper heating.

Can I fix Liebherr oven F04 error myself?

Yes, you can try power cycling the oven and ensuring that nothing is obstructing the sensors.

How much does it cost to fix F04 error?

Repair costs for the F04 error typically range from ¥5,000 to ¥15,000 for parts only.

When should I call a technician for F04?

Call a technician if the error persists after sensor replacement or if accessing internal components seems unsafe.

Data last verified: 2026-04-23

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