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Error code reference

LG Refrigerator Error Code Freezer 2nd Digit g

Freezer defrost error

LG codesLG refrigerator codes

Freezer defrost error - connector slipped-out, open-contact, wire cut, short-circuited, defective thermistor, or continuous heating during defrost exceeding 80 minutes.

First step from the service manual

Read resistance between the purple and white wire terminals; 0 Ohm = Heater Short, ∞ Ohm = Wire Cut or Blown Thermistor.

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

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What Freezer 2nd Digit g means on a LG refrigerator

The Freezer 2nd Digit g error code on an LG refrigerator indicates a freezer defrost system fault. This code triggers when the control board detects an abnormal condition in the freezer defrost circuit, which includes the defrost heater, the defrost thermistor (also called a thermal limiter or sensor), and the associated wiring harness. The defrost system is responsible for periodically melting frost buildup on the evaporator coil. When the system cannot complete a defrost cycle normally, or when sensor readings fall outside acceptable parameters, this error is logged.

There are several distinct failure modes that can trigger this code. A slipped or disconnected connector, a broken wire, or a short circuit in the heater circuit will all register as faults. A defective thermistor will cause incorrect temperature readings during the defrost cycle, which the board interprets as an error. The most time-based trigger is continuous defrost heating exceeding 80 minutes without the thermistor reaching its cutoff temperature, which typically indicates the heater is running but not effectively heating, or the thermistor is not responding correctly.

The first diagnostic step is to read resistance across the purple and white wire terminals of the defrost heater circuit. A reading of 0 ohms indicates a direct short in the heater element or wiring. An infinite resistance (open circuit) points to a severed wire, a blown thermal fuse, or a failed thermistor. Values between these extremes suggest the heater may be intact, shifting the focus toward the thermistor, connectors, or the control board's defrost relay.

Source: manufacturer service documentation.

Common causes of Freezer 2nd Digit g

  1. 01

    Defective Defrost Thermistor

    Part replacement

    The thermistor monitors temperature during the defrost cycle and signals the board to stop heating. A failed thermistor either reads incorrectly or creates an open circuit, causing the board to flag the error. Check resistance across the thermistor terminals and compare to the expected value for the current temperature.

  2. 02

    Blown Thermal Fuse or Open Circuit

    Part replacement

    An infinite resistance reading across the purple and white wire terminals indicates a wire cut, blown thermal limiter, or open connection somewhere in the defrost circuit. Inspect the entire wiring harness and connectors from the heater to the control board for breaks or burn marks.

  3. 03

    Slipped or Disconnected Connector

    Wiring / connection

    Connectors in the defrost circuit can vibrate loose or slip out over time, creating an intermittent or permanent open circuit. Inspect all connectors in the freezer defrost wiring harness and reseat any that are loose or partially disconnected.

  4. 04

    Shorted Defrost Heater

    Part replacement

    A 0 ohm reading across the purple and white wire terminals confirms the heater element has shorted internally. A shorted heater can cause continuous heating that exceeds the 80-minute threshold before a thermal fuse trips. The heater assembly will need to be replaced.

  5. 05

    Defrost Cycle Exceeding 80 Minutes

    Part replacement

    If the heater runs but cannot raise the evaporator temperature enough to trip the thermistor within 80 minutes, the board logs this error. This can result from a partially failed heater, heavy frost accumulation, or a thermistor that is slow to respond. Inspect both the heater and thermistor as part of this diagnosis.

See the test procedure for each cause

Frequently asked questions about Freezer 2nd Digit g

What does Freezer 2nd Digit g mean on a LG refrigerator?
This error code indicates a fault in the freezer defrost circuit. The control board has detected one of several possible problems: a disconnected or damaged wiring connector, a cut or shorted wire, a defective defrost thermistor, or a defrost heating cycle that ran longer than 80 minutes without completing. The first step is to measure resistance across the purple and white wire terminals of the defrost heater to determine whether you have a short circuit or an open circuit.
Can I fix the Freezer 2nd Digit g error myself?
Some causes, such as a slipped connector, can be fixed without replacing any parts. However, faults involving a shorted heater, open circuit wiring, or a failed thermistor will require replacing the defective component. If you are comfortable using a multimeter and accessing the freezer evaporator panel, you can perform the resistance test yourself. For any work involving heater replacement or wiring repair, basic appliance repair skills are needed.
Is it safe to keep using my refrigerator while this error is active?
You should address this error promptly. A failed defrost system will cause frost to accumulate on the evaporator coils, which progressively reduces cooling performance in both the freezer and fresh food compartments. A shorted heater element also carries a risk of prolonged uncontrolled heating if the thermal protection fails. Continued use without repair can lead to food spoilage and potential component damage.
Will resetting the refrigerator clear the Freezer 2nd Digit g error?
A power reset may temporarily clear the error code, but it will return if the underlying fault in the defrost circuit has not been corrected. The control board will attempt another defrost cycle and re-detect the same problem. A reset is useful for confirming whether the fault is intermittent, such as a loose connector, but it is not a repair.
How much does it cost to repair the Freezer 2nd Digit g error on an LG refrigerator?
Repair costs vary depending on which component has failed. A defrost thermistor typically costs between $15 and $50 for the part alone. A defrost heater assembly generally runs between $30 and $100. If the repair requires a service technician for diagnosis and labor, total costs including the part could range from $100 to $300 or more depending on your location and the specific failure.

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