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Error code reference

GE Refrigerator Error Code 0001

FF1 (Refrigerator 1) Thermistor Reading Out of Range

GE codesGE refrigerator codes

FF1 (Refrigerator 1) Thermistor Reading Out of Range

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Get the full diagnostic procedure for 0001.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
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What 0001 means on a GE refrigerator

GE error code 0001 indicates the control board has detected a reading from the fresh food (FF) thermistor that falls outside the expected resistance range. The thermistor is a temperature-sensing component located in the fresh food compartment that continuously reports temperature data to the main control board. When the board receives a signal that is too high, too low, or absent entirely, it throws this code because it can no longer reliably regulate cooling in that section of the refrigerator.

For homeowners, the thermistor is essentially a small sensor that tells your refrigerator how cold the fresh food section is. When it fails or loses its connection, the control board goes in blind and cannot make accurate decisions about when to run the compressor or fans. This does not always mean the compartment has stopped cooling, but it does mean the refrigerator is operating without reliable temperature feedback, which can lead to food being too warm or too cold.

The code can be triggered by a failed thermistor, a wiring problem between the thermistor and the control board, or in rarer cases a faulty control board misreading a good signal. Diagnosing which of these is the actual cause requires a multimeter to test thermistor resistance.

Source: manufacturer service documentation.

Common causes of 0001

  1. 01

    Failed FF thermistor

    Part replacement

    The fresh food thermistor itself has failed internally, producing a resistance value outside the normal operating range or no signal at all. This is the most common cause of code 0001 and requires replacing the thermistor.

  2. 02

    Damaged or disconnected thermistor wiring harness

    Wiring / connection

    The wiring between the FF thermistor and the control board has a break, a loose connector, or corrosion at a terminal, causing the board to read an out-of-range or open circuit signal. Inspecting and reseating or repairing the harness may resolve the code without replacing the thermistor itself.

  3. 03

    Thermistor connector corroded or moisture-damaged

    Part replacement

    Condensation or a water leak inside the fresh food compartment can corrode the thermistor connector pins, creating high resistance or an intermittent signal that falls outside the acceptable range for the control board.

  4. 04

    Faulty main control board

    Part replacement

    If the thermistor and wiring both test within spec using a multimeter, the main control board may be misinterpreting a valid signal. This is the least likely cause but should be considered after all other components check out.

See the test procedure for each cause

Frequently asked questions about 0001

What does error code 0001 mean on a GE refrigerator?
Code 0001 on a GE refrigerator means the fresh food (FF) thermistor is sending a reading that falls outside the range the control board expects. The thermistor is the temperature sensor in the fresh food compartment. The code appears when the sensor signal is too high, too low, or missing entirely, which could point to a bad thermistor, a wiring fault, or a corroded connector.
How do I fix error code 0001 on a GE refrigerator?
Start by unplugging the refrigerator for a few minutes to see if the code clears, which can rule out a temporary glitch. If it returns, locate the FF thermistor in the fresh food compartment and test its resistance with a multimeter at a known temperature. At 32 degrees Fahrenheit the thermistor should read approximately 16,600 ohms, and at 77 degrees Fahrenheit approximately 5,000 to 6,000 ohms. If resistance is out of range, replace the thermistor. If it reads correctly, inspect the wiring harness and connector for damage or corrosion.
Is it safe to keep using my GE refrigerator when code 0001 is showing?
You can use the refrigerator for a short period, but there is a real risk that the fresh food compartment will not maintain a safe temperature because the control board has lost reliable sensor feedback. Place a standalone thermometer in the fresh food section and check it frequently. If the compartment temperature rises above 40 degrees Fahrenheit, move perishable food and have the refrigerator serviced promptly.
How much does it cost to fix GE refrigerator error code 0001?
If the FF thermistor is the cause, the part typically costs between $15 and $40 depending on the model, and replacing it is a manageable DIY repair for most homeowners since it involves unplugging a connector and swapping the sensor. If the wiring harness needs repair, costs depend on the extent of the damage. A main control board, if that turns out to be the culprit, can run $100 to $300 for the part. Professional labor adds roughly $100 to $200 on top of parts.
Can a bad wiring connection cause code 0001 on a GE refrigerator?
Yes, a loose, broken, or corroded wiring connection between the FF thermistor and the control board can produce an out-of-range reading and trigger code 0001 even when the thermistor itself is fine. Inspect the connector at both the thermistor end and at the board, look for bent or corroded pins, and reseat the connector firmly. Cleaning corrosion with electrical contact cleaner and reseating the connector sometimes resolves the code without any parts replacement.

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