The display shows E2; the freezer temperature may be erratic, or the unit may over-freeze or under-freeze.

Safety first: Unplug the refrigerator before removing freezer panels.

Steps:

• Access the freezer thermistor: Typically located on the rear wall of the freezer behind a small cover or clipped to the evaporator cover.
• Inspect wiring: Look for ice buildup around the sensor, damaged insulation, or broken clips that may have pulled on the wires.
• Test the thermistor: Disconnect the sensor and measure resistance with a multimeter. Compare to the expected resistance at the measured temperature (often ~10kΩ at 77°F / 25°C). If the reading is open, shorted, or significantly out of specification, replace the thermistor.
• Check connector at control: Verify that the freezer sensor connector is fully seated and free of corrosion at the main control board.

Corrective action: Replace the freezer thermistor if defective. After replacement, restore power and monitor temperatures; the E2 code should clear automatically or after a power reset.