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Error code reference

LG Refrigerator Error Code Freezer 2nd Digit d

Freezer fan error

LG codesLG refrigerator codes

Freezer fan error - bad feedback signaling wire contact, motor wire slipped-out, or defective motor.

First step from the service manual

Check voltage between MAIN PCB CN72 #1 (GRAY) and #2 (YELLOW); should be 7V~12V.

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 d means on a LG refrigerator

The Freezer 2nd Digit d error code on an LG refrigerator indicates a freezer evaporator fan motor fault. Specifically, the control system has detected an abnormal feedback signal from the freezer fan circuit, which prevents the main PCB from confirming that the fan is operating correctly. The freezer fan is critical for circulating cold air throughout the freezer compartment, and when the PCB loses reliable communication with the fan motor, it logs this error to alert the technician to a wiring or motor problem.

The three primary causes are a bad connection at the feedback signaling wire, a motor wire that has physically slipped out of its connector, or a defective fan motor itself. The main PCB monitors fan operation through a dedicated feedback line, and any interruption in that signal path will trigger this code. The first diagnostic step is to measure voltage between pins CN72 #1 (GRAY wire) and #2 (YELLOW wire) on the main PCB. A healthy circuit will show between 7V and 12V at this test point. A reading outside that range, or no voltage at all, points toward a wiring issue or a failed motor rather than a PCB problem.

Because this error can stem from something as simple as a loose connector rather than a failed component, a thorough physical inspection of all wiring harness connections between the main PCB and the freezer fan motor should be completed before condemning the motor itself. Technicians should check for signs of wire pull-out at both the PCB connector and the motor connector, inspect the harness for chafing or damage, and confirm the voltage reading at CN72 before proceeding with any part replacement.

Source: manufacturer service documentation.

Common causes of Freezer 2nd Digit d

  1. 01

    Loose or disconnected feedback wire at PCB connector CN72

    Wiring / connection

    The feedback signal wire at CN72 pins #1 or #2 may have a poor seating or partial pull-out, interrupting the voltage signal the PCB expects to see. Inspect the connector for proper engagement and confirm voltage reads between 7V and 12V at those pins.

  2. 02

    Motor wire slipped out of the fan motor connector

    Wiring / connection

    The wiring harness at the fan motor end can work loose over time due to vibration or frost buildup. Visually inspect where the harness plugs into the fan motor body and reseat any wires that have backed out of the connector housing.

  3. 03

    Defective freezer fan motor

    Part replacement

    If wiring and connectors check out and the voltage at CN72 is still outside the 7V to 12V range, the fan motor itself may have an internal winding or feedback circuit failure. A defective motor will need to be replaced.

  4. 04

    Damaged or chafed wiring harness

    Part replacement

    The wire harness running between the main PCB and the fan motor can be damaged by ice buildup, sharp edges in the cabinet, or repeated flexing. Check the full length of the harness for cuts, pinches, or exposed conductors that could cause an open or short circuit.

  5. 05

    Faulty main PCB

    Part replacement

    If the harness and motor both test as good but the voltage at CN72 is absent or out of range, the main PCB may not be supplying the correct voltage to the fan circuit. This is the least likely cause and should only be considered after all wiring and motor checks are complete.

See the test procedure for each cause

Frequently asked questions about Freezer 2nd Digit d

What does Freezer 2nd Digit d mean on a LG refrigerator?
This code indicates a freezer fan error, meaning the main control board is not receiving a proper feedback signal from the freezer evaporator fan motor. The fault can be caused by a loose or disconnected signal wire, a motor wire that has slipped out of its connector, or a defective fan motor. The board monitors the fan through connector CN72 and expects to see between 7V and 12V on the feedback line. When that signal is missing or abnormal, this error is logged.
Can I fix the Freezer 2nd Digit d error myself?
In some cases, yes. If the cause is a loose or disconnected wire at the PCB connector CN72 or at the fan motor, reseating the connector may resolve the error without replacing any parts. You should check that the GRAY wire at CN72 pin #1 and the YELLOW wire at pin #2 are firmly seated and that no wires have slipped out of the motor connector. If voltage at CN72 reads outside 7V to 12V after reseating all connections, the fan motor likely needs to be replaced, which is a more involved repair.
Is it safe to use my LG refrigerator while the Freezer 2nd Digit d error is active?
It is not advisable to rely on the refrigerator for food storage while this error is active. A non-functioning freezer fan means cold air cannot circulate properly, and freezer and fresh food compartment temperatures may rise to unsafe levels. Frozen food could begin to thaw, and perishables may spoil faster than expected. Address the fault as soon as possible to avoid food loss.
How much does it cost to repair the Freezer 2nd Digit d error on an LG refrigerator?
If the fix is simply reseating a loose wire connector, there may be no parts cost at all, though a service call fee typically ranges from $75 to $150. If the freezer fan motor needs to be replaced, parts and labor combined generally range from $150 to $350 depending on the specific model and local labor rates. A main PCB replacement, if required, can push the total higher, often in the $300 to $600 range.
Will resetting my LG refrigerator clear the Freezer 2nd Digit d error?
A reset may temporarily clear the error code from the display, but the code will return if the underlying fault is not corrected. If the fan motor is not receiving proper voltage or the feedback signal is still interrupted, the main PCB will detect the problem again during normal operation and re-log the error. A reset is only useful as a first check to see if the issue was a temporary glitch; it is not a repair.

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