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Error code reference

Frigidaire Freezer Error Code E8

Thermistor is shorted (Precision Set Control

Frigidaire codesFrigidaire freezer codes

Thermistor is shorted (Precision Set Control: display alternates between 'E8' and '-10°F').

First step from the service manual

Check thermistor resistance; replace if shorted.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What E8 means on a Frigidaire freezer

The E8 error code on a Frigidaire freezer with Precision Set Control indicates that the thermistor has shorted. A shorted thermistor means the sensor's internal resistance has collapsed to near zero ohms, which is the opposite of an open-circuit failure. The thermistor is a negative temperature coefficient (NTC) resistor that continuously reports cabinet temperature to the control board. When the board receives a resistance reading consistent with a short, it cannot determine the actual freezer temperature and triggers E8. On Precision Set Control models, the display alternates between 'E8' and '-10°F' to alert the user to this fault condition.

The thermistor is typically mounted inside the freezer cabinet and connected to the control board via a wiring harness. A legitimate short can occur when the thermistor's internal components fail due to age, moisture intrusion, or physical damage. However, the fault can also originate in the wiring harness itself. A pinched wire, a chafed conductor making contact with the cabinet or another wire, or a corroded connector can all present as a shorted thermistor at the control board.

Diagnosing E8 begins with measuring the thermistor's resistance using a multimeter. A properly functioning thermistor will show a resistance value that corresponds to the ambient temperature in the cabinet. A reading at or near zero ohms confirms a short in the sensor itself. If resistance is normal at the thermistor but the error persists, inspect the wiring harness and connector pins between the thermistor and the control board for damage, corrosion, or contact points that could cause a short to ground.

Source: manufacturer service documentation.

Common causes of E8

  1. 01

    Failed thermistor (internal short)

    Part replacement

    The thermistor itself has shorted internally, causing its resistance to drop to near zero ohms. Confirm this by measuring resistance directly at the thermistor terminals with a multimeter.

  2. 02

    Pinched or damaged wiring harness

    Part replacement

    The wiring between the thermistor and the control board may be pinched, chafed, or otherwise damaged, creating a short circuit in the harness rather than in the sensor itself. Visually inspect the harness routing for any contact with sharp metal edges or moving parts.

  3. 03

    Corroded or contaminated connector

    Wiring / connection

    Moisture can cause corrosion at the thermistor connector, bridging the terminals and simulating a short. Check the connector for green or white oxidation deposits and signs of water intrusion.

  4. 04

    Moisture intrusion at the thermistor

    Wiring / connection

    Water or ice accumulation around the thermistor body can create a conductive path that mimics a short circuit. This is more common in units with defrost drain issues that allow water to pool near sensor mounting locations.

See the test procedure for each cause

Frequently asked questions about E8

What does E8 mean on a Frigidaire freezer?
E8 on a Frigidaire freezer with Precision Set Control means the temperature thermistor has shorted. The display will alternate between 'E8' and '-10°F' to indicate this fault. The thermistor is a resistive sensor that reports internal cabinet temperature to the control board, and a short causes its resistance to collapse to near zero, making accurate temperature monitoring impossible. The thermistor or its associated wiring must be inspected and repaired to resolve the error.
Can I fix an E8 error on my Frigidaire freezer myself?
A knowledgeable DIYer can diagnose this error by using a multimeter to measure the thermistor's resistance at the sensor terminals. If the thermistor reads near zero ohms, it needs to be replaced. If the sensor reads correctly, the wiring harness and connector between the thermistor and control board should be inspected for damage or corrosion. Thermistor replacement is generally a straightforward repair involving unplugging the old sensor and plugging in a new one.
Is it safe to keep using my freezer while the E8 code is showing?
Operating the freezer with an active E8 code is not advisable for extended periods. Because the control board cannot read an accurate temperature from a shorted thermistor, it cannot regulate the compressor and cooling system correctly. This puts your frozen food at risk and may cause the compressor to run improperly. Address the fault as soon as possible to protect both your food and the appliance.
Will resetting the freezer clear the E8 error code?
Simply resetting the freezer by unplugging it and restoring power will not permanently clear E8 if the thermistor or wiring is still shorted. The control board will detect the fault again once it attempts to read temperature and the error will return. The underlying hardware problem must be corrected before the code will stay cleared.
How much does it cost to repair a Frigidaire freezer E8 error?
If the thermistor itself is shorted, the part is typically inexpensive, often in the range of $10 to $40 depending on the specific model. If the repair is performed by a technician, total costs including labor generally fall in the range of $75 to $200. Wiring harness repairs or connector cleaning may cost less if no parts are needed, while a control board replacement, if found to be at fault, would increase costs significantly.

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