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
- Turn off and disconnect power to the oven
- Let the oven cool completely
- Access the oven temperature sensor inside the oven cavity and inspect the connector for loose or disconnected wires
- Reconnect sensor harness firmly
- Restore power and check if error persists
Technician Only Replace oven temperature sensor
- Disconnect power to the oven at the service panel
- Remove oven back panel to access temperature sensor wiring
- Test sensor resistance with multimeter to confirm open/shorted condition
- Replace sensor with OEM part if readings are out of specification
- Reassemble and test oven heating function
Parts needed: Oven temperature sensor, Screwdrivers, Multimeter
- 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.
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.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Model-compatible Oven parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Non-Scratch Cooktop Cleaner
A routine surface-care product. Confirm that it is approved for the specific glass, ceramic, enamel, or stainless finish.
Oven Thermometer
A diagnostic aid for comparing cavity temperature during a controlled check. It does not prove which internal component has failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
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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