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GE · Dryer

E31

Moisture Sensor Fault

Severity
Low

Seeing E31 on your GE Dryer display means the appliance self-diagnostic detected "Moisture Sensor Fault". Before calling a technician, work through the steps in this guide — the fix is often simpler than you think.

Owner's Summary

The moisture sensor bars inside your GE dryer's drum have a residue film from fabric softener, causing inaccurate dryness readings. Wiping them with rubbing alcohol resolves this in most cases at no cost.

Symptoms

GE dryer ending cycles too early or too late, E31 error

Common Causes

  • Moisture sensor bars coated with fabric softener residue
  • Oxidized sensor contacts
  • Wiring fault to moisture sensor
  • Sensor module failure

How to Fix

  1. 1 Clean the moisture sensor bars inside the drum with rubbing alcohol
  2. 2 Avoid dryer sheets contacting the sensor directly
  3. 3 Inspect wiring harness to sensor module
  4. 4 Replace sensor module if cleaning does not help

Tools You'll Need

Flashlight

These are simple, low-risk fixes most homeowners can do with tools already in a basic toolbox.

Technical Explanation

The moisture sensor measures conductivity through damp fabric touching both metal bars. Residue insulates the bars electrically, causing inconsistent readings that trigger E31 regardless of actual garment moisture.

Is It Safe to Keep Using?

No safety risk. Clothes may come out over or under-dried until fixed.

Technician's Pro Tip

Switch from dryer sheets to liquid fabric softener added during the wash cycle to prevent this residue buildup recurring. Clean the sensor bars every few weeks as routine maintenance.

Related Codes

E11 — GE Washing Machine

Water Fill Issue

High
E21 — GE Washing Machine

Slow Drain or Drain Fault

High
E31 — GE Washing Machine

Pressure Sensor Fault

Medium

Frequently Asked Questions

What does error code E31 mean on a GE Dryer?
Code E31 on a GE Dryer indicates "Moisture Sensor Fault." In practice, the most common trigger is moisture sensor bars coated with fabric softener residue. Severity is rated low, and typical repair costs range from $0 to $100.
Can I fix E31 myself, or do I need a technician?
Many cases of E31 can be resolved without a technician. The first step to try: clean the moisture sensor bars inside the drum with rubbing alcohol. If that doesn't clear the code, work through the remaining steps in the "How to Fix" section above before assuming a part needs replacing.
Is it safe to keep using my dryer with code E31 showing?
No safety risk. Clothes may come out over or under-dried until fixed.
How much does it cost to repair E31 on a GE Dryer?
Repair costs for code E31 typically range from $0 to $100. Cleaning: $0; Sensor module: $20–$60. Costs on the low end usually reflect a DIY fix with no parts required, while the high end reflects a part replacement plus professional labor.
Estimated Repair Cost USD
$0 – $100

Cleaning: $0; Sensor module: $20–$60