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Error code reference

LG Refrigerator Error Code Pantry Room Sensor Error

Sensor system in Pantry Room has errors; temperature error code displays when sensing temperature is more…

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Sensor system in Pantry Room has errors; temperature error code displays when sensing temperature is more than 149°F(+65°C) or less than -58°F(-50°C).

First step from the service manual

Check voltage of MAIN PCB CN30#9 <-> CN76#1: shall be between 4.5V~1.0V.

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

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What Pantry Room Sensor Error means on a LG refrigerator

The Pantry Room Sensor Error on an LG refrigerator indicates a fault within the temperature sensing system located in the pantry compartment. This error triggers when the sensor reports a temperature reading that falls outside the acceptable operating range, specifically above 149°F (65°C) or below -58°F (-50°C). These boundary values are far beyond normal refrigerator operating conditions, which means the sensor itself is likely sending a corrupted or out-of-range signal rather than the compartment actually reaching those temperatures. The pantry room sensor is a thermistor, a resistive component whose resistance value changes with temperature, and the main PCB interprets that resistance as a temperature reading.

The primary diagnostic entry point involves measuring the voltage at the main PCB connector CN30 pin 9 and cross-referencing it against connector CN76 pin 1. The expected voltage under normal operating conditions should fall between 1.0V and 4.5V. A reading outside this window points to a break in the circuit, a shorted thermistor, a wiring harness fault, or a failure on the main PCB itself. If voltage is present and within spec, the fault may be intermittent or related to a loose connector rather than a fully failed component.

Common contributors to this error include a failed thermistor due to moisture intrusion or physical damage, damaged wiring in the harness connecting the sensor to the PCB, corroded or loose connector pins at CN30 or CN76, and in less common cases, a main PCB that is misreading an otherwise functional sensor circuit. Proper diagnosis requires a multimeter to verify voltage at the specified connector points before replacing any components.

Source: manufacturer service documentation.

Common causes of Pantry Room Sensor Error

  1. 01

    Failed Pantry Thermistor

    Part replacement

    The thermistor is the most frequent culprit. It can fail due to moisture exposure or age, causing it to send a voltage signal outside the 1.0V to 4.5V range the main PCB expects. Replacing the thermistor resolves the error in most cases.

  2. 02

    Loose or Corroded Connector Pins

    Wiring / connection

    Connector pins at CN30 pin 9 or CN76 pin 1 can loosen or corrode over time, disrupting the voltage signal between the sensor and the main PCB. Inspecting and reseating the connectors should be done before replacing any parts.

  3. 03

    Damaged Wiring Harness

    Part replacement

    The wiring between the pantry sensor and the main PCB can sustain damage from pinching, chafing, or moisture. A broken or shorted wire in the harness will produce an out-of-range voltage reading at the connector test points.

  4. 04

    Main PCB Fault

    Part replacement

    If voltage at CN30 pin 9 and CN76 pin 1 is within the 1.0V to 4.5V range and the wiring and thermistor check out, the main PCB may be misinterpreting the signal or failing internally. This is a less common but possible cause.

See the test procedure for each cause

Frequently asked questions about Pantry Room Sensor Error

What does Pantry Room Sensor Error mean on a LG refrigerator?
This error means the temperature sensor inside the pantry compartment is reporting a reading above 149°F (65°C) or below -58°F (-50°C), which are outside the valid operating range. In nearly all cases, the compartment is not actually at those temperatures. Instead, the thermistor sensor or its wiring circuit has failed and is sending a faulty signal to the main control board.
Can I fix the Pantry Room Sensor Error myself?
A knowledgeable DIYer can start by checking the wiring connections at the main PCB connectors CN30 pin 9 and CN76 pin 1 using a multimeter to verify voltage falls between 1.0V and 4.5V. If the connectors look corroded or loose, reseating them may clear the error. Replacing the thermistor is also a manageable repair for someone comfortable with basic appliance work, but main PCB replacement should be handled by a qualified technician.
Will resetting my LG refrigerator clear the Pantry Room Sensor Error?
A reset may temporarily clear the error display, but the code will return if the underlying fault in the sensor circuit is not repaired. Resetting is useful for confirming whether the error is intermittent, but it does not fix a failed thermistor, damaged wiring, or faulty connector. Proper electrical testing is needed to identify and resolve the root cause.
Is it safe to keep using my LG refrigerator while the Pantry Room Sensor Error is active?
With a failed pantry sensor, the refrigerator's main control board may not be able to accurately regulate the temperature in the pantry compartment. This could result in food stored in that section being held at an unsafe temperature without you being aware of it. It is best to avoid storing perishable items in the pantry section until the sensor is repaired.
How much does it cost to repair the Pantry Room Sensor Error on an LG refrigerator?
If only the thermistor needs replacement, parts typically cost between $15 and $50 depending on the model, and labor for a professional repair adds $80 to $150 or more. If the main PCB is at fault, parts alone can range from $100 to $300 or higher, making that a considerably more expensive repair. Getting a diagnostic visit from a certified technician is recommended to confirm which component has failed before committing to parts costs.

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