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Error code reference

LG Refrigerator Error Code Er Id

Freezer shelf icing sensor error caused by short or disconnection of the freezer shelf ice maker icing sensor…

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Freezer shelf icing sensor error caused by short or disconnection of the freezer shelf ice maker icing sensor or ice maker sensor.

First step from the service manual

Check each sensor at its connector.

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

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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What Er Id means on a LG refrigerator

The Er Id error code on an LG refrigerator indicates a fault in the freezer shelf icing sensor circuit, specifically associated with the ice maker icing sensor. This sensor monitors ice formation conditions on the freezer shelf and plays a direct role in the ice maker's ability to detect and regulate the icing cycle. When the control board detects either a short circuit or an open circuit (disconnection) in this sensor's wiring, it triggers the Er Id code to alert the technician to a failure in that sensing loop.

The root cause is typically electrical in nature. A short circuit means two conductors in the sensor circuit are making unintended contact, causing abnormally low resistance readings. A disconnection, or open circuit, means the circuit path is broken entirely, resulting in no continuity through the sensor or its wiring harness. Either condition prevents the control board from receiving valid temperature or icing data from the sensor, which disrupts ice maker operation.

Diagnosis begins at the sensor connector. The connector should be inspected for corrosion, bent pins, moisture intrusion, or a loose seating condition. If the connector checks out, continuity and resistance readings taken directly at the sensor will reveal whether the sensor itself has failed internally. Wiring between the sensor and control board should also be traced for any pinch points, chafing, or frost damage that could cause an intermittent or permanent fault.

Source: manufacturer service documentation.

Common causes of Er Id

  1. 01

    Loose or disconnected sensor connector

    Wiring / connection

    The icing sensor connector may have worked loose from its socket or become partially unseated, breaking the circuit. Inspecting and firmly reseating the connector at both the sensor and control board ends is the first step.

  2. 02

    Failed icing sensor

    Part replacement

    The freezer shelf icing sensor itself may have developed an internal open or short circuit. This can be confirmed by measuring resistance directly across the sensor terminals and comparing the reading to expected values.

  3. 03

    Corroded or damaged connector terminals

    Wiring / connection

    Moisture and frost in the freezer environment can corrode the metal terminals inside the sensor connector, increasing resistance or breaking continuity entirely. Visually inspect terminals for oxidation or greenish buildup.

  4. 04

    Damaged wiring harness

    Part replacement

    The wiring between the icing sensor and the control board may be pinched, chafed, or broken, particularly at points where the harness passes through freezer walls or near moving components. A continuity test along the harness will identify the break.

  5. 05

    Faulty control board

    Part replacement

    If the sensor and all associated wiring test within normal parameters, the control board's sensor input circuit may have failed. This is the least common cause and should only be considered after all other components are ruled out.

See the test procedure for each cause

Frequently asked questions about Er Id

What does Er Id mean on a LG refrigerator?
Er Id indicates a fault in the freezer shelf icing sensor circuit connected to the ice maker. The control board has detected either a short circuit or a complete disconnection in the sensor wiring. This prevents the refrigerator from receiving valid data from the icing sensor, which disrupts ice maker function. The first diagnostic step is to inspect the sensor connector for damage or a loose connection.
Can I fix the Er Id error myself?
Some causes of Er Id are DIY-friendly. Checking the sensor connector for a loose fit, corrosion, or visible wiring damage requires only basic tools and no special training. However, testing sensor resistance and replacing internal components like the icing sensor or control board may require a multimeter and comfort working with refrigerator wiring. If you are not confident with electrical diagnostics, a qualified appliance technician is recommended.
Is it safe to keep using my refrigerator when Er Id is displayed?
The Er Id code specifically affects the ice maker icing sensor, so your refrigerator's main cooling and freezing functions may continue to operate normally. However, the ice maker should not be relied upon while the fault is active, as the sensor error will disrupt the icing cycle. Continuing to run the ice maker in this condition could lead to incomplete ice production or other ice maker issues.
How much does it cost to repair an Er Id error on an LG refrigerator?
Repair costs vary depending on the failed component. Replacing an icing sensor is generally the least expensive fix, with parts typically ranging from $15 to $60 and labor adding $75 to $150 if a technician is used. A control board replacement is significantly more costly, with parts alone often ranging from $100 to $300 or more. Getting a diagnostic visit first helps identify the exact cause before committing to parts.
Will resetting my LG refrigerator clear the Er Id error code?
A power reset may temporarily clear the Er Id code, but the error will return if the underlying sensor fault is still present. Because the code is triggered by a detected electrical condition, such as a short or open circuit in the sensor wiring, the fault must be physically corrected before the code will stay cleared. Resetting without repairing is not a permanent solution.

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