Westinghouse Oven Error F4

⚡ Quick Answer: The Westinghouse Oven F4 error code signifies a malfunction in the temperature sensor circuit, which can lead to inaccurate temperature readings and h... ✅ DIY Fixable

What Does Error F4 Mean?

The Westinghouse Oven F4 error code signifies a malfunction in the temperature sensor circuit, which can lead to inaccurate temperature readings and heating issues. Typically, this may result in the oven failing to reach or maintain the desired temperature, or it may shut down unexpectedly. This error often indicates an open or shorted temperature sensor, requiring attention to restore proper function.

Common Symptoms:

  • F4 displayed on oven control panel
  • Oven fails to reach or maintain temperature
  • Oven may shut down or refuse to heat

Possible Causes

  • Open or shorted oven temperature sensor (medium)

How to Fix Error F4

DIY Fix Check sensor connection and power cycle

  1. Turn off and disconnect power to the oven
  2. Let the oven cool completely
  3. Access the oven temperature sensor inside the oven cavity and inspect the connector for loose or disconnected wires
  4. Reconnect sensor harness firmly
  5. Restore power and check if error persists

Technician Only Replace oven temperature sensor

  1. Disconnect power to the oven at the service panel
  2. Remove oven back panel to access temperature sensor wiring
  3. Test sensor resistance with multimeter to confirm open/shorted condition
  4. Replace sensor with OEM part if readings are out of specification
  5. Reassemble and test oven heating function

Parts needed: Oven temperature sensor, Screwdrivers, Multimeter

🛑 When to Call a Pro:
  • If error persists after replacing sensor and verifying wiring
  • If internal oven control board appears damaged or displays multiple fault codes

Next step

Choose the next step for F4

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
component Temperature Sensor
resistance 1000-1100 ohms
part_number WB21X5301
voltage_rating 120V AC

Common Questions

What does F4 error mean on Westinghouse Oven?

F4 indicates a malfunction in the temperature sensor circuit, leading to heating issues.

Can I fix Westinghouse Oven F4 error myself?

Yes, you can check the sensor connection and power cycle the oven.

How much does it cost to fix F4 error?

Estimated repair cost ranges from $30 to $120 for parts and service.

When should I call a technician for F4?

Call a technician if the error persists after replacing the sensor or if the control board is damaged.

Data last verified: 2026-07-22

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