Troubleshooting GE Monogram wall oven error code F3

Is your GE Monogram wall oven displaying error code F3, leaving you unable to cook? Don’t worry, this is a common problem that you can resolve yourself without the need for a costly service call and we’re here to help!

If you find out that you need any replacement parts for your appliance, you can enter your model number at AppliancePartsPros.com to order them. Most orders arrive in just two business days, and we have thousands of free guides to show you how to install your new parts.

The error code information provided in this article may not apply to your specific appliance model. While we strive to offer helpful advice for DIY appliance repairs, variations in models and configurations can lead to differences in troubleshooting steps, error codes and part replacements. For the most accurate guidance, we strongly recommend consulting the technical sheet for your specific appliance model.

What the error means

The F3 error code on a GE Monogram wall oven indicates that the oven sensor is reading an open circuit, which means the sensor is not functioning correctly.

The oven temperature sensor monitors the internal oven temperature and provides this information to the oven’s control board. When the control board detects that the sensor resistance is outside the normal operating range, it triggers the F3 error code.

An open circuit in the oven sensor can occur for a few reasons:

• The oven temperature sensor itself may have failed, resulting in an open circuit.
• The wiring harness that connects the oven sensor to the control board may have a break or damage, causing an interruption in the circuit.
• In rare cases, a problem with the control board itself may be misinterpreting the sensor input, leading to the F3 error.

Safety precautions

When working on any appliance, remember to keep safety first. Here are some tips to keep in mind: 

• Always power off and unplug your appliance or switch off the circuit breaker before attempting any maintenance or replacement work. This keeps you safe by preventing any risk of injury from electric shock.
• Wear insulated work gloves to protect your hands from sharp metal parts, pinching hazards, and debris.
• Take your time and don’t rush while working to prevent accidents and personal injuries.
• Work in a well-lit area so you can clearly see and access the interior parts.
• Clear your workspace of clutter and other obstacles. Keep children and pets away from the work area.
• Never work on internal parts with bare wet hands. Make sure the work area is completely dry.
• Check your user manual to see if there are specific installation or safety instructions for your part or appliance. 
• Be gentle when handling or removing parts. Excessive force might damage the appliance or cause injury.
• Wear safety glasses when working with chemicals, dust, or cleaning large debris to prevent injury. 
• If the appliance has recently been used, give it plenty of time for any heating parts to cool down before working on it. 
• Take pictures or make a note of wiring terminals or other connections before disconnecting to prevent any problems with reassembly.
• When working with wires, avoid touching any exposed wires or terminals. If you need to touch a wire, use a non-conductive tool or wear insulating gloves to prevent an electrical shock.

Troubleshooting steps

1. Unplug the wall oven from the power source or turn off the circuit breaker to the wall oven.
2. Locate the harness that connects the oven sensor to the control board.
3. Carefully disconnect the sensor harness from the control board.
4. Use a multimeter to measure the resistance across the two white leads of the sensor harness.
5. The sensor resistance should be around 1080 ohms at room temperature.
6. The resistance will change by approximately 2 ohms per degree of temperature change.
7. If the resistance reading is over 3000 ohms, it indicates an open circuit in the oven sensor.
8. This would trigger the F3 error code on the oven.
9. If the sensor resistance is within the expected range, inspect the harness and terminals for any signs of damage.
10. Look for any cuts, fraying, or corrosion on the wires or terminals.
11. If the sensor resistance is out of range, the oven sensor needs to be replaced.
12. If the harness or terminals are damaged, the sensor harness will need to be replaced.
13. If the sensor tests good and there are no wiring issues, the control board will need to be replaced. 

Additional information

Thank you for reading! We hope this guide helped you get your GE wall oven working again.

If you have any other appliance repair needs or projects, don’t hesitate to explore our other troubleshooting guides and videos. 

If you need replacement parts or some extra help with ordering them, grab your model number and head over to AppliancePartsPros.com, where you can chat with a pro, read our DIY blog and more.

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