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Error code reference

LG Refrigerator Error Code 14

External atmosphere sensor system abnormality

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External atmosphere sensor system abnormality - electric wire cut, short-circuit, contact failure, sensor housing missing, or temperature defect (displayed only when sensor detection temperature is not lower than 122°F nor higher than -58°F).

First step from the service manual

Check for electric wire cut, short-circuit, contact failure, or sensor housing missing on the external atmosphere sensor.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What 14 means on a LG refrigerator

Error code 14 on an LG refrigerator indicates an abnormality in the external atmosphere sensor system. This sensor monitors the ambient temperature surrounding the refrigerator, and the fault is triggered when the sensor's detected temperature falls outside the valid operating range, specifically when the reading is not lower than 122°F and not higher than -58°F. When the sensor reports a value outside this window, the control board interprets the signal as invalid and logs the fault.

The root causes fall into several categories: a broken or severed wire in the sensor circuit, a short-circuit within the wiring harness, a loose or corroded connector causing intermittent contact failure, a physically missing or dislodged sensor housing, or an actual temperature defect within the sensor component itself. Each of these conditions can disrupt the signal traveling between the external atmosphere sensor and the main control board, producing a reading that the board cannot accept as valid.

Diagnosis should begin at the sensor wiring harness. Inspect the full wire run from the sensor to the control board, checking for any visible damage, pinching, or corrosion. Connector pins should be seated fully and free of oxidation. If the wiring checks out, verify that the sensor housing is properly mounted and intact. A thermistor-type atmosphere sensor can be tested with a multimeter to confirm its resistance output falls within the expected range for the ambient temperature. If resistance is open or shorted, sensor replacement is required.

Source: manufacturer service documentation.

Common causes of 14

  1. 01

    Loose or corroded connector

    Wiring / connection

    The wiring connector linking the external atmosphere sensor to the control board can loosen or develop corrosion over time, causing intermittent or lost contact. Inspect the connector for bent pins, oxidation, or incomplete seating.

  2. 02

    Broken or cut sensor wire

    Part replacement

    Physical damage to the sensor wiring, such as a pinched, severed, or chafed wire, can interrupt the signal entirely. Visually trace the full wire run and use a multimeter to check for continuity.

  3. 03

    Short-circuit in sensor wiring

    Part replacement

    A short-circuit in the sensor harness can cause the control board to receive an out-of-range signal. This can result from wires rubbing against a sharp edge or moisture intrusion at a connector.

  4. 04

    Failed external atmosphere sensor

    Part replacement

    The sensor itself can fail internally, producing a resistance value that corresponds to a temperature outside the valid range. A multimeter resistance test on the sensor will reveal an open or shorted reading if the component has failed.

  5. 05

    Missing or dislodged sensor housing

    Part replacement

    If the sensor housing is physically absent or has come loose from its mounting position, the sensor may be exposed to conditions that push its readings outside the acceptable range. Check that the housing is present and properly secured.

See the test procedure for each cause

Frequently asked questions about 14

What does 14 mean on a LG refrigerator?
Error code 14 on an LG refrigerator signals a problem with the external atmosphere sensor system. The code appears when the sensor reports a temperature that is not lower than 122°F and not higher than -58°F, meaning the reading is outside the valid range the control board will accept. The cause can be a wiring fault, connector issue, missing sensor housing, or a defective sensor itself.
Can I fix error code 14 on my LG refrigerator myself?
Some causes of error code 14, such as a loose connector or dislodged sensor housing, can be addressed without replacing parts. Start by inspecting the sensor wiring harness and connectors for visible damage, corrosion, or loose connections. If the wiring is intact and connections are secure but the error persists, testing the sensor with a multimeter or replacing the sensor component will likely require more technical experience.
Is error code 14 on an LG refrigerator a safety concern?
Error code 14 relates to the external atmosphere sensor rather than the internal food compartment temperature sensors, so it does not directly indicate that your food is at risk. However, if the refrigerator's control system relies on ambient temperature data for certain functions, those functions may be impaired while the fault is active. It is best to resolve the fault promptly rather than leaving it unaddressed.
How much does it cost to repair error code 14 on an LG refrigerator?
If the repair requires only a connector cleaning or reseating, there may be no parts cost involved. Replacing the external atmosphere sensor typically costs in the range of $20 to $60 for the part, while professional labor for diagnosis and repair can add $75 to $200 or more depending on your location and service provider. Wiring harness repairs can vary depending on the extent of the damage.
Will resetting my LG refrigerator clear error code 14?
A power reset may temporarily clear the error code display, but if the underlying wiring fault, connector failure, or sensor defect is still present, the code will return. A reset is useful for confirming whether the fault is intermittent, but it is not a fix. The sensor circuit needs to be physically inspected and repaired to resolve the issue permanently.

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