Refrigerator shows E1 and fresh food compartment temperature is incorrect (too warm or too cold).

Safety first: Disconnect power before accessing internal components.

Access the refrigerator sensor:

• Locate the sensor in the fresh food compartment (often behind a small plastic cover on the rear wall or near the light housing).
• Remove the cover using a screwdriver or by releasing clips.
• Visually inspect the sensor and wiring for damage, moisture, or corrosion.
• Unplug and replug the sensor connector to ensure a solid connection.

Basic functional check:

• With power still off, gently tug the wire harness to ensure it is not broken inside the insulation.
• If you have a multimeter and the service specs, measure the sensor resistance at room temperature. A reading far outside the specified range indicates a bad sensor.

Temporary workaround: If the unit still cools but over- or under-cools, set the temperature to a mid-range setting and monitor food temperature with a fridge thermometer until the sensor can be replaced.

Note: If wiring and sensor appear intact but E1 persists, the control board may not be reading the sensor correctly and may need replacement.