GE Refrigerator F2 Error Code—How to Diagnose and Fix Thermistor Issues

If your GE refrigerator displays an F2 error code, it’s signaling a problem with Cabinet Thermistor 2—the sensor that monitors the fridge’s internal temperature.

In this guide, you’ll learn:

• What the F2 error code means
• How to test a GE refrigerator thermistor
• Resistance chart values for accurate diagnosis
• Step-by-step troubleshooting and repair tips

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What Does the GE Refrigerator F2 Error Code Mean?

The F2 error code indicates an invalid temperature signal from the Cabinet Thermistor 2. This thermistor sends temperature data to the main control board. If the reading is out of range, the refrigerator can’t regulate temperature correctly.

Common causes:

• Defective thermistor
• Loose or damaged thermistor wiring
• Corroded connector pins
• Faulty main control board

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How to Test a GE Refrigerator Thermistor (2 Methods)

✅ Method 1: Test Thermistor Without Removing It

1. Unplug the fridge for safety.
2. Access the main control board (usually behind the rear panel).
3. Locate the J1 connector—this is where thermistors connect.
4. Use a multimeter set to ohms (Ω) to measure resistance.
5. Compare your reading to the temperature-resistance chart below.
6. Optional: Place the thermistor in ice water (32°F) for accurate calibration.

✅ Method 2: Remove and Test the Thermistor

1. Unplug the refrigerator.
2. Remove the thermistor from its location (evaporator or fridge compartment).
3. Cut or unplug the wire harness.
4. Measure resistance using a multimeter.
5. Compare values to the thermistor resistance chart.

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GE Refrigerator Thermistor Resistance Chart

Use this chart to match thermistor resistance to actual temperatures:

Resistance (kΩ)	Temperature (°F)	Temperature (°C)
16.3	32	0
10.0	50	10
7.8	59	15
6.2	68	20
5.0	77	25
3.2	95	35
2.2	113	45

For a full chart, including extreme temperatures and other thermistor types, scroll down to the extended charts section.

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Extended Thermistor Charts for GE Refrigerators

📌 Late-Model GE Thermistor Chart

Resistance (kΩ)	Temperature (°F)	Temperature (°C)
6.3	32	0
5.7	35.6	2
4.9	41	5
3.8	50	10
2	77	25

📌 Ice Maker Mold Thermistor Chart

Resistance (kΩ)	Temperature (°F)	Temperature (°C)
27	32	0
25	35.6	2
10	77	25

📌 GE Under-Counter Ice Maker Thermistor

Resistance (kΩ)	Temperature (°F)
81.7–99.8	0
59.4–72.6	10
30.2–36.9	32
10.2–12.5	70

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Where Is the GE Refrigerator Thermistor Located?

The thermistor is typically:

• Clipped to the evaporator coil
• Mounted inside the refrigerator or freezer compartment
• Connected to the main control board (J1 pin)

Check your model’s tech sheet or user manual for the exact location.

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How to Fix the F2 Thermistor Error

✅ If the thermistor reading is incorrect: Replace it with a genuine GE part.
✅ If wiring is damaged: Repair or replace wiring harness.
✅ If the control board isn’t detecting correct signals: You may need to replace the main control board.

Always unplug the refrigerator before replacing any parts.