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LG Refrigerator Error Code Mid Pantry-Sensor Error

Sensor system in Pantry Room compartment has error.

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Sensor system in Pantry Room compartment has error.

First step from the service manual

Check voltage at MAIN PCB CN30-9 to CN76-1; should be 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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  • Wiring diagram references and connector pinouts from the OEM service manual
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What Mid Pantry-Sensor Error means on a LG refrigerator

The Mid Pantry-Sensor Error on an LG refrigerator indicates a fault within the temperature sensor system of the Pantry Room compartment. This compartment relies on a dedicated NTC (negative temperature coefficient) thermistor to relay accurate temperature readings back to the main PCB. When the control board detects a signal outside the expected parameters, either from an open circuit, a short circuit, or an out-of-range resistance value, it logs this error and may disable or limit temperature control for the affected zone.

The primary diagnostic starting point is measuring the voltage at the main PCB connector CN30-9 to CN76-1. Under normal operating conditions, this voltage should fall between 1.0V and 4.5V, corresponding to the sensor's resistance change across the temperature range it monitors. A reading near 5V typically points to an open circuit in the sensor loop, such as a broken wire or failed sensor. A reading near 0V suggests a short to ground somewhere in the sensor circuit or wiring harness.

Common root causes include a faulty pantry sensor thermistor, damaged wiring between the sensor and the main PCB, corroded or loose connector pins at CN30-9 or CN76-1, or in less frequent cases, a defective main PCB that is misreading the sensor signal. Physical inspection of the harness routing through the pantry compartment is important, as wiring in this area can be pinched or abraded during normal use or after a service event.

Source: manufacturer service documentation.

Common causes of Mid Pantry-Sensor Error

  1. 01

    Faulty Pantry Room thermistor

    Part replacement

    The NTC thermistor sensor itself may have failed, producing a resistance value outside the acceptable range. This will cause the voltage at CN30-9 to CN76-1 to read near 0V or near 5V instead of the expected 1.0V to 4.5V window.

  2. 02

    Damaged or broken sensor wiring

    Part replacement

    The wiring harness connecting the pantry sensor to the main PCB can become pinched, cut, or broken, especially along harness routing paths through the compartment walls. Inspect the full wire run for visible damage or breaks.

  3. 03

    Loose or corroded connector pins

    Wiring / connection

    Connector pins at CN30-9 or CN76-1 on the main PCB may be loose, corroded, or improperly seated, interrupting the signal between the sensor and the board. Reseating and inspecting the connectors for corrosion or damage is an important early diagnostic step.

  4. 04

    Short circuit in the sensor circuit

    Part replacement

    A short to ground in the sensor wiring will pull the voltage reading at the PCB connector close to 0V. This can result from chafed insulation allowing a wire to contact a metal surface within the refrigerator cabinet.

  5. 05

    Defective main PCB

    Part replacement

    If the sensor and all associated wiring test within spec but the error persists, the main PCB may be failing to correctly read or process the sensor signal. This is less common and should only be considered after all wiring and sensor components have been ruled out.

See the test procedure for each cause

Frequently asked questions about Mid Pantry-Sensor Error

What does Mid Pantry-Sensor Error mean on a LG refrigerator?
This error means the main control board has detected a fault in the temperature sensor circuit for the Pantry Room compartment. The sensor, known as an NTC thermistor, monitors the temperature in that zone and sends a corresponding voltage signal back to the main PCB. When that voltage falls outside the expected range of 1.0V to 4.5V at connector CN30-9 to CN76-1, the board registers this error. The fault can stem from a failed sensor, damaged wiring, or a loose connector.
Can I fix the Mid Pantry-Sensor Error myself?
A knowledgeable DIYer with a multimeter can begin by checking the voltage at the main PCB connector CN30-9 to CN76-1 to determine whether the circuit is open or shorted. Inspecting and reseating connectors requires no special tools and may resolve the error if a loose connection is the cause. Replacing the thermistor sensor is also a manageable repair for someone comfortable working inside a refrigerator. However, if the main PCB is at fault, that replacement is more complex and may warrant professional service.
Is it safe to keep using my refrigerator while this error is showing?
The refrigerator may continue operating in other compartments while this error is active, but the Pantry Room temperature may not be accurately controlled. This means food stored in that compartment could be at risk of improper temperatures. It is best to address the error promptly and avoid storing perishable items in the pantry zone until the sensor is repaired.
Will resetting the refrigerator clear the Mid Pantry-Sensor Error?
A power reset by unplugging the refrigerator for a few minutes may temporarily clear the error display, but if the underlying sensor or wiring fault still exists, the error will return. Resetting the unit is a useful first step to confirm whether the fault is intermittent, but it is not a substitute for diagnosing and repairing the actual cause.
How much does it cost to repair the Mid Pantry-Sensor Error on an LG refrigerator?
Repair costs vary depending on the root cause. Replacing the pantry thermistor sensor is typically the least expensive fix, with parts generally ranging from $15 to $50 and labor costs adding $75 to $150 if a technician is used. If the main PCB is the source of the fault, parts alone can range from $100 to $300 or more, with total repair costs potentially reaching $200 to $500 including labor.

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