Display shows E5 and the ice maker or ice compartment temperature is abnormal.

Safety first: Disconnect power before working in the ice maker area.

Access the ice maker sensor:

• Remove the ice bin from the freezer or door.
• On Insignia models with built-in ice makers, the thermistor is often integrated into the ice maker assembly or mounted near the ice mold.

• Inspect wiring: Check the harness from the ice maker to the cabinet or door hinge. Look for pinched, broken, or corroded wires, especially where the harness flexes.
• Check connectors: Disconnect and reconnect the ice maker plug to ensure a solid connection.
• Test thermistor (if accessible): With the unit unplugged, measure resistance across the thermistor leads. Compare to expected NTC values at freezer temperature. Open or shorted readings indicate failure.
• Replace sensor or ice maker assembly: If the thermistor is integrated and not serviceable separately, replace the entire Insignia ice maker assembly. Follow manufacturer instructions for mounting and leveling.
• Restore power and test: After reassembly, restore power and allow several hours for the ice maker to cycle. Confirm that the E5 code clears.

Note: If wiring and sensor are good but E5 persists, the main control board may be defective.