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Error code reference

LG Refrigerator Error Code 14E

Ice Maker(F/Freezer) Sensor Error

LG codesLG refrigerator codes

Ice Maker(F/Freezer) Sensor Error — sensor housing separation, contact error, disconnection, or short circuit; detected temperature above 149°F (+65°C) or below -58°F (-50°C).

First step from the service manual

Measure voltage between Main PCB CN90 #8 and #9; should read between 4.5V and 1.0V.

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

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What 14E means on a LG refrigerator

The 14E error code on an LG refrigerator indicates a fault in the ice maker freezer compartment temperature sensor. This sensor monitors the thermal environment inside the freezer section of the ice maker and relays that data back to the main PCB through a dedicated circuit. The error is triggered when the control board detects a temperature reading outside the acceptable operating range, specifically above 149°F (65°C) or below -58°F (-50°C). These extreme values typically indicate an electrical fault rather than an actual temperature condition, since neither extreme would occur under normal refrigerator operation.

The root cause is almost always a wiring or connection problem rather than a failed sensor itself. The error covers four specific fault conditions: physical separation of the sensor from its housing, poor contact at a connector, a broken or disconnected wire in the sensor circuit, or a short circuit within the harness. The first diagnostic step is to measure voltage at the main PCB connector CN90, specifically between pins 8 and 9. A healthy sensor circuit will read between 1.0V and 4.5V depending on the current temperature. A reading outside this range, or no reading at all, confirms a fault in the sensor loop.

If wiring and connectors check out visually and the voltage measurement is still out of range, the sensor itself may have failed internally. Sensors can degrade over time due to moisture exposure, vibration, or age-related resistance drift. Resistance drift in the sensor element will cause the control board to calculate an impossible temperature value, triggering the 14E code even when the connector and harness are intact.

Source: manufacturer service documentation.

Common causes of 14E

  1. 01

    Loose or corroded sensor connector

    Wiring / connection

    The connector linking the freezer ice maker sensor to the main PCB harness may have worked loose or developed corrosion on the contacts. Check the CN90 connector at the main PCB and the sensor-side connector for any looseness, oxidation, or bent pins.

  2. 02

    Damaged sensor wiring harness

    Part replacement

    The wire harness running to the ice maker sensor can develop cracks, breaks, or chafing damage, especially near areas with repeated movement or sharp edges. A visual inspection of the full wire run and a continuity test will confirm a broken conductor.

  3. 03

    Sensor housing separation

    Wiring / connection

    The sensor element can physically pull out of its mounting housing due to ice buildup pressure or physical disturbance during prior service. Inspect the sensor housing in the freezer ice maker compartment to confirm the sensor probe is fully seated.

  4. 04

    Short circuit in the sensor circuit

    Part replacement

    A short circuit between the sensor signal wires will cause the voltage at CN90 pins 8 and 9 to collapse outside the 1.0V to 4.5V range. This can result from pinched wiring, moisture bridging contacts, or insulation breakdown.

  5. 05

    Failed ice maker temperature sensor

    Part replacement

    If the wiring and connectors are intact but the voltage reading at CN90 is still out of range, the sensor element itself has likely failed due to internal resistance drift or moisture damage. Replacement of the sensor is required to clear the fault.

See the test procedure for each cause

Frequently asked questions about 14E

What does 14E mean on a LG refrigerator?
The 14E code indicates an error with the ice maker freezer compartment temperature sensor. The control board has detected a temperature reading above 149°F (65°C) or below -58°F (-50°C), which falls outside any real operating condition and points to a sensor connection problem or sensor failure. The fault can involve a disconnected wire, a loose connector, a short circuit, or the sensor physically separating from its housing.
Can I fix the 14E error myself on my LG refrigerator?
Some causes of the 14E error are DIY-friendly, particularly reseating a loose connector or re-securing a sensor that has pulled out of its housing. Start by measuring voltage at main PCB connector CN90 between pins 8 and 9, which should read between 1.0V and 4.5V. If voltage is out of range and you can trace the wiring harness to identify a broken or shorted wire, that repair is also accessible to a skilled DIYer. Sensor replacement is straightforward if wiring checks pass and the sensor itself has failed.
Will resetting my LG refrigerator clear the 14E error?
A power reset may temporarily clear the 14E code, but it will return if the underlying sensor fault has not been corrected. The control board continuously monitors the voltage on the sensor circuit, so any persistent wiring, connection, or sensor issue will retrigger the error shortly after the reset. A reset alone is not a fix, but it can be useful after completing repairs to confirm the fault has been resolved.
Is the 14E error on my LG refrigerator a safety concern?
The 14E error itself does not pose a direct safety hazard to your home or food in the main refrigerator compartment. However, the fault will typically disable the ice maker, and depending on how the control system responds, freezer temperature regulation may be affected. It is best to address the error promptly to avoid any secondary impact on food preservation in the freezer section.
How much does it cost to repair the 14E error on an LG refrigerator?
If the fix is simply reseating a connector or resecuring the sensor in its housing, the cost is minimal, typically just your time. A replacement ice maker temperature sensor generally runs in the range of $15 to $50 for the part. If a technician is needed for diagnosis and repair, expect labor costs in the range of $80 to $200 depending on your location and the complexity of the wiring repair involved.

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