E31 and E32 error codes on a Frigidaire dryer: A troubleshooting guide

If your Frigidaire dryer shows an E31 or E32 error code, there’s likely an issue with the moisture contact sensor. The E31 code indicates the “contact sensor frequency is too high” while the E32 code means the “contact sensor frequency is too low”. In both cases, the control board is most likely having trouble properly reading the moisture sensor, which detects when clothes are dry.

In most cases, this error means you can just replace the sensor to get your dryer functioning again. In rarer cases, you may have to replace the control board.

Let’s walk through how to diagnose and correct E31 and E32 codes.

If you have more questions or other replacement parts for your Frigidaire dryer, you can take your model number to AppliancePartsPros.com to look up information for your specific unit.

Disclaimer: The error code information provided in this article is based on general service manuals and 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.

READ MORE: How to prevent appliance fire hazards

How the moisture contact sensor works

Frigidaire dryers use a temperature sensor and moisture sensor strips to determine when a load of laundry is dry. The moisture sensing system is known as the “contact sensor” or “sensor bars”. This is typically located on the back of the dryer drum.

The contact sensor consists of two conductive metal strips. When wet clothes touch the strips, this closes the circuit so current can pass between the strips. The control board monitors how much current is flowing so it can estimate the remaining moisture content.

As clothes dry out, they touch the sensor strips less often, so less current flows. The control board uses preset thresholds to determine when the clothes are dry based on the sensor readings.

READ MORE: 8 DIY Safety Tips

What causes E31 and E32 sensor errors?

The E31 error signifies the control board detects higher than normal current readings from the sensor, while E32 means lower readings.

E31 causes:

• A foreign object stuck in the sensor that’s causing constant contact
• Damaged wires that are shorting the sensor circuit
• A defective control board that’s providing inaccurate readings

E32 causes:

• Buildup/debris that’s insulating the sensor contacts
• Damaged wires that are opening the sensor circuit
• A defective control board that’s providing inaccurate readings

READ MORE: 9 WAYS TO IMPROVE YOUR DRYER’S PERFORMANCE

What you need

• Tech sheet
• Screwdriver(s)
• Multimeter
• Pliers
• Flashlight
• Work gloves

Keep safety first

• 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 electric shock.
• If the appliance has recently been used, give it plenty of time to cool down before working on it.
• 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 appliance parts.
• Keep your workspace free of clutter and other obstacles. Keep children and pets away from the work area.
• Never work on internal parts with wet hands. Make sure the work area is completely dry.
• Check the user manual to see if there are specific installation or safety instructions related to your appliance or replacement part.
• Be gentle when handling or removing parts. Excessive force might damage the appliance or cause personal injury.
• Wear insulated work gloves to protect your hands from sharp metal parts and debris.
• Consider wearing safety glasses and/or a dust mask when working with chemicals, dust or a large amount of debris to prevent irritation or injury.

How to troubleshoot an E31 error code

1. Turn off and disconnect the power to the dryer.
2. Visually inspect the moisture sensor wires for damage.
3. Use a multimeter to check the wiring for any shorts. Resistance here should be an open circuit (very high or infinite resistance level).
4. Look for debris, damage, and foreign objects stuck on strips and remove any that you find.
5. Check the resistance between the strips. It should be an open circuit.
6. Reinstall the sensor once any parts are corrected or the sensor is replaced. If you don’t find any obvious issues, then replace the control board to restore accurate contact sensor readings.

READ MORE: How to Clean a Dryer Vent 

How to troubleshoot an E32 error code

1. Unplug the dryer and disconnect it from the power source.
2. Visually inspect the sensor wires and connections for damage.
3. Check the wires for continuity with a multimeter.
4. Check both strips for debris buildup or damaged insulating contacts. Clean or replace as necessary.
5. Check the sensor for continuity with a multimeter.
6. If the sensor and wires check out ok, the control board is likely providing inaccurate low readings. Replace the control board.

READ MORE: Dryer Settings: The Ultimate Guide to Understanding, Using, and Maintaining Your Appliance

How to reset dryer controls after repair

Once you replace the faulty component that’s causing an E31 or E32 error:

1. Plug in the dryer.
2. Enter diagnostic mode to clear any stored error codes from memory. Find the instructions for doing so in your dryer’s tech sheet.
3. Run a full test cycle making sure everything is functioning normally and that you have accurate moisture sensing.

READ MORE: Tips for Caring for Your Dryer

More information

Thank you for reading! We hope this guide helped you get your dryer 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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