Freezer display shows E2 and may run continuously or not cool correctly; temperature swings widely.

Safety warning: Always unplug the freezer before accessing the evaporator area. Sharp metal fins can cut; wear gloves.

Steps to diagnose and fix:

• Defrost first: If the evaporator area is heavily iced, unplug the unit and allow it to defrost with the door open for several hours. Place towels to catch water.
• Access the evaporator: Remove the interior rear panel inside the freezer compartment to expose the evaporator coil and sensor wiring.
• Locate the evaporator thermistor: It is usually clipped to the evaporator tubing or mounted near the coil with a small plastic clip.
• Inspect wiring: Look for brittle, cracked, or ice-damaged insulation. Ensure the thermistor is firmly clipped to the tubing and the connector is tight.
• Test the sensor: Disconnect the thermistor and measure resistance with a multimeter. Compare to the cabinet thermistor at similar temperature; values should be in a similar range (typically 5k–10k ohms at room temperature). A reading of 0 ohms or infinite resistance indicates failure.
• Replace if needed: Install an Igloo-compatible evaporator thermistor. Clip it securely to the evaporator tube in the same location as the original to ensure accurate sensing.
• Reassemble and test: Reinstall the rear panel, plug the freezer back in, and monitor for several hours to confirm the E2 code clears and temperature stabilizes.

Note: If the sensor tests good but E2 remains, the electronic control board may be misreading the sensor and require replacement.