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Error code reference

Frigidaire Refrigerator Error Code E2

Freezer room sensor failure

Frigidaire codesFrigidaire refrigerator codes

Freezer room sensor failure — problem with the sensor terminals of the F room or the sensor circuit.

First step from the service manual

Check the status and connections of the F room sensor (CN1)

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

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What E2 means on a Frigidaire refrigerator

The E2 error code on a Frigidaire refrigerator indicates a freezer compartment temperature sensor failure. This sensor, commonly referred to as the F room sensor, is a negative temperature coefficient (NTC) thermistor that continuously monitors the temperature inside the freezer section. The control board uses this signal to regulate compressor operation and fan cycles. When the board detects a reading outside the expected resistance range, or loses the signal entirely, it triggers the E2 fault to alert that temperature regulation in the freezer section may be compromised.

The fault is specifically tied to the sensor terminals at connector CN1, which is the plug point where the sensor wiring harness connects to the main control board or sensor circuit. A fault at this location can stem from either the sensor itself or the wiring between the sensor and the board. The thermistor may have drifted out of spec due to age or moisture exposure, or the connector pins at CN1 may have corroded, loosened, or pulled back from their housing, causing an intermittent or open circuit.

The first diagnostic step is to physically inspect the F room sensor and its connection at CN1. Check that the connector is fully seated, that no pins are bent or corroded, and that the wiring shows no signs of chafing or damage. If the connection appears sound, the sensor itself should be tested with a multimeter to verify its resistance output matches expected values for the current freezer temperature. A reading that is open, shorted, or well outside the normal range confirms sensor failure.

Source: manufacturer service documentation.

Common causes of E2

  1. 01

    Loose or disconnected sensor connector at CN1

    Wiring / connection

    The wiring harness connector at CN1 can work loose over time due to vibration or handling during cleaning. Inspect the connector and reseat it firmly to rule this out before replacing any parts.

  2. 02

    Failed F room thermistor

    Part replacement

    The thermistor itself may have failed, producing a resistance reading that is open, shorted, or far outside the expected range for the freezer temperature. Testing with a multimeter will confirm whether the sensor needs replacement.

  3. 03

    Corroded or damaged connector pins at CN1

    Wiring / connection

    Moisture or condensation inside the freezer section can cause the terminal pins at CN1 to corrode, increasing resistance or breaking the circuit entirely. Look for green or white oxidation on the pin contacts.

  4. 04

    Damaged sensor wiring harness

    Part replacement

    The wire run between the F room sensor and the control board can develop a break or short due to chafing against sharp edges or being pinched during a previous repair. Inspect the full length of the harness for visible damage.

  5. 05

    Faulty main control board

    Part replacement

    If the sensor and all wiring check out correctly, the control board itself may have a defect in the circuit that reads the CN1 sensor input. This is the least common cause and should only be considered after all other components are confirmed good.

See the test procedure for each cause

Frequently asked questions about E2

What does E2 mean on a Frigidaire refrigerator?
The E2 code means the refrigerator has detected a failure in the freezer compartment temperature sensor, also called the F room sensor. The control board is either receiving a signal outside the expected range or no signal at all from this sensor. The fault is associated with the sensor terminals at connector CN1. The refrigerator may not regulate freezer temperature correctly while this code is active.
Can I fix the E2 error on my Frigidaire refrigerator myself?
In many cases, yes. Start by unplugging the refrigerator and locating the F room sensor connector at CN1. Inspect the connection for looseness, bent pins, or corrosion and reseat it firmly. If the connection is solid, use a multimeter to test the sensor resistance. A reading that is open or shorted confirms the thermistor needs to be replaced, which is a straightforward repair for someone comfortable working with appliance components.
Is it safe to keep using my refrigerator while the E2 code is showing?
It is not recommended to rely on the refrigerator for food storage while E2 is active. Because the control board cannot accurately read freezer temperature, it may not run the compressor correctly, which can lead to inadequate cooling. Perishable foods in the freezer could thaw without any obvious warning. Address the fault as soon as possible to avoid food spoilage.
How much does it cost to repair a Frigidaire refrigerator E2 error?
If the fix is simply reseating a loose connector, there is no parts cost involved. Replacing the F room thermistor sensor typically runs between $15 and $50 for the part, depending on the model. If a technician is needed for diagnosis and repair, expect total costs in the range of $100 to $250, including labor. A control board replacement, if required, can push costs higher.
Will resetting my Frigidaire refrigerator clear the E2 error code?
A reset may temporarily clear the E2 code by cutting power to the control board, but the code will return if the underlying issue with the F room sensor or CN1 connector has not been resolved. Unplugging the unit for a few minutes and restoring power is a reasonable first step to see if the fault was a temporary glitch, but a persistent E2 code requires physical inspection and testing of the sensor circuit.

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