Frigidaire Oven: error code F3

Professional Repair Guide

What is this symptom?

If your Frigidaire oven displays error code F3, you may experience issues like failure to reach the set temperature, beeping, or the oven shutting off unexpectedly. This indicates a communication or sensor fault in the temperature monitoring circuit, often related to the oven temperature sensor or wiring.

Urgency: Medium

Important Tips for Frigidaire Models

Official documentation notes an F3/F20 communication error that may be temporarily cleared by resetting power; persistent errors after reset likely relate to sensor or wiring faults.
Repair manuals list F3 specifically tied to oven probe (sensor) issues, but also caution that control board and wiring should be verified before part replacement.

Possible Causes

Faulty oven temperature sensor (RTD)

How to Identify: Error appears during preheat or temperature regulation; sensor resistance out of expected range when measured with multimeter, open or shorted reading

Part: Oven temperature sensor (resistance temperature detector)

Loose/damaged wiring between temperature sensor and control board

How to Identify: Visible frayed, burned, or loose wires/connectors; continuity test fails or intermittent connection indicated when moving harness

Part: Sensor wiring harness and connectors

Electronic control board sensor circuit failure

How to Identify: Sensor and wiring test within specs but F3 persists; board shows no correct resistance signals; other control anomalies

Part: Main oven control board (EOC)

Temporary communication glitch

How to Identify: F3 appears intermittently and clears after power reset; no persistent faults detected

Part: Control logic / power reset state

DIY Solutions

Power Reset to Clear Temporary Fault

Easy 5 minutes

Turn off oven power by unplugging it or switching off circuit breaker.
Wait about 30 seconds.
Restore power and check if F3 code is cleared.

⚠️ Safety First: Ensure oven is completely off before handling any parts.

Inspect and Reseat Sensor Wiring

Moderate 15–30 minutes

Tools Needed: Screwdriver, multimeter

Disconnect power to oven at breaker.
Remove rear access panel to reach sensor wiring harness.
Visually inspect wiring and connectors for signs of damage.
Reseat any loose connectors and ensure secure connections.
Use multimeter in continuity mode to check wiring harness end-to-end.
Reassemble and restore power to test for F3 code.

⚠️ Safety First: Always disconnect power before accessing internal components.

Test and Replace Oven Temperature Sensor

Moderate 30–60 minutes

Tools Needed: Screwdriver, multimeter, replacement sensor

Turn off power to oven at circuit breaker.
Open oven door and locate temperature sensor (typically rear wall top).
Remove sensor mounting screws and pull probe forward.
Disconnect old sensor wiring.
Test sensor resistance; if out of spec, replace with correct part for model.
Reconnect new sensor and reassemble panels.
Restore power and verify F3 error clears.

⚠️ Safety First: Ensure correct replacement part is used for your model.

Next step

Choose the next step for error code F3

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

Check during diagnosis

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

Optional: enter your model number

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.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Wiring Harness

Connects controls, sensors, motors, and other electrical components inside the appliance.

$20 - $120 · Medium · 30-90 mins

Check fit & price

Possible related component

Main Control Board

The central brain of the appliance that controls all components, cycles, and timings.

$120 - $280 · Medium · 20-40 mins

Check fit & price

Model number required

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.

Find a part that fits my model

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.

Maintenance supply

Non-Scratch Cooktop Cleaner

A routine surface-care product. Confirm that it is approved for the specific glass, ceramic, enamel, or stainless finish.

View maintenance supply

Diagnostic tool

Oven Thermometer

A diagnostic aid for comparing cavity temperature during a controlled check. It does not prove which internal component has failed.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Replace Main Oven Control Board

Estimated Cost: $200 - $500+

Full Sensor Circuit Wiring Replacement

Estimated Cost: $50 - $150

When to Call a Professional

F3 persists after DIY temperature sensor and wiring checks

Sensor tests good but error remains indicating possible control board fault

Visible significant damage to wiring harness requiring complex repair

Preventive Maintenance

Periodically inspect sensor wiring: Loose or degraded connections causing sensor communication errors
Frequency: annually
Clean oven cavity and check sensor condition: Residue buildup that may affect sensor readings
Frequency: every 6 months

Frequently Asked Questions

Why is my Frigidaire Oven error code F3?

Error code F3 typically indicates a faulty oven temperature sensor, damaged wiring, or a communication glitch.

How do I fix Frigidaire Oven error code F3 myself?

You can reset power, inspect sensor wiring, or test and replace the oven temperature sensor.

How much does it cost to fix error code F3?

Professional repairs for error code F3 can range from $200 to $500+ for the control board replacement.

When should I call a technician for error code F3?

Call a technician if DIY fixes don't resolve the issue, especially if it involves control board replacement.

References & Sources

Range Error Code F3/F20 - Communication Error Official

Community Analytical Insights

Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions

Common Issues Reported by Users

Faulty temperature sensor (thermistor) causing incorrect readings
Short circuit in the oven control board due to moisture or damage
Wiring issues or loose connections between the temperature sensor and control board

User Suggested Solutions

Check and replace the temperature sensor. Disconnect the oven from power, remove the back panel, locate the temperature sensor, and test it with a multimeter. If it shows a resistance outside the normal range, replace it with a new one.
Inspect the oven control board for signs of damage or moisture. If damaged, replace the control board by disconnecting power, removing the screws holding the board in place, and installing a new one.
Check wiring connections between the temperature sensor and control board. Ensure all connections are secure and free from corrosion. Repair or replace any damaged wires.

Limited-source guidance; percentages and success-rate claims are not shown
View Sources