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Error code reference

LG Refrigerator Error Code dr

Refrigerator door switch defective

LG codesLG refrigerator codes

Refrigerator door switch defective — senses door open for more than 1 hour.

First step from the service manual

Check if the R door is actually opened or not.

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

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What dr means on a LG refrigerator

The dr error code on an LG refrigerator indicates that the door switch circuit has detected the refrigerator door in an open state for more than one continuous hour. The door switch is an electromechanical component that signals the control board whether the door is open or closed. When the control board registers an open-door condition persisting beyond the one-hour threshold, it triggers the dr code to alert the user and protect the unit from temperature loss, excess compressor cycling, and moisture accumulation inside the cabinet.

The first thing to determine is whether the door is physically open or ajar. A door left slightly open, a drawer not fully seated, or a door gasket holding the door slightly off its seal can all cause a genuine open-door condition that trips this code. If the door is confirmed to be fully closed, attention shifts to the door switch itself. The switch can fail mechanically by sticking in the open position, or electrically through a broken contact or wiring fault that causes the control board to always read an open-door signal.

Wiring between the door switch and the control board is also a potential failure point. Damaged insulation, a loose connector, or a broken wire in the door hinge area, where harnesses flex repeatedly, can interrupt the signal and mimic a defective switch. Diagnosing the switch typically involves checking for continuity through the switch contacts and inspecting the wiring harness for visible damage or loose terminals before condemning the switch or the control board.

Source: manufacturer service documentation.

Common causes of dr

  1. 01

    Door physically left open or ajar

    Wiring / connection

    The most straightforward cause is that the refrigerator door, including any fresh food or freezer section door, is not fully closed. Check that nothing inside the fridge is blocking the door and that it closes flush against the cabinet.

  2. 02

    Defective door switch

    Part replacement

    The door switch can fail mechanically or electrically, causing it to continuously report an open-door signal to the control board even when the door is shut. Testing the switch for proper continuity when pressed and released will confirm whether it has failed.

  3. 03

    Damaged or faulty door gasket

    Part replacement

    A worn, torn, or warped door gasket may prevent the door from closing tightly enough to activate the door switch. Inspect the gasket around the full perimeter of the door for gaps, tears, or areas where it no longer makes contact with the cabinet frame.

  4. 04

    Wiring harness damage near door hinge

    Wiring / connection

    The wiring connecting the door switch to the control board runs through the hinge area and flexes every time the door opens and closes. Over time this can cause wire breaks or loose connectors that produce a constant open-door signal. Inspect the harness carefully for pinched, frayed, or disconnected wires.

  5. 05

    Control board misreading switch input

    Part replacement

    If the door switch and wiring both test correctly, the main control board may be failing to accurately interpret the switch signal. This is a less common cause and should be considered only after the switch and wiring have been ruled out.

See the test procedure for each cause

Frequently asked questions about dr

What does dr mean on a LG refrigerator?
The dr code on an LG refrigerator means the control board has detected that the refrigerator door has been open, or appears to be open, for more than one continuous hour. It points to either a door that is physically ajar or a defective door switch that is incorrectly signaling an open-door condition. The first step is always to check whether the door is actually closed all the way.
How do I fix the dr error code on my LG refrigerator?
Start by making sure the door is fully closed and that no food items or shelving are preventing it from sealing. If the door is closed properly, inspect the door gasket for damage and test the door switch for continuity. If the switch has failed, it will need to be replaced. Also check the wiring harness at the hinge area for any breaks or loose connectors.
Will resetting my LG refrigerator clear the dr error code?
A power reset may temporarily clear the dr code, but if the underlying problem, such as a faulty door switch or a damaged wiring harness, has not been repaired, the code will return once the control board detects the open-door condition again. Resetting is useful for confirming whether the error is persistent, but it is not a fix on its own.
Is the dr error code on my LG refrigerator a safety concern?
The dr code is not an immediate safety hazard, but it does indicate that the refrigerator is not maintaining a sealed environment. A prolonged open-door condition causes temperature rise inside the cabinet, which can lead to food spoilage. It also forces the compressor to run more frequently, increasing energy use and wear on the system. Addressing the code promptly is recommended.
How much does it cost to repair the dr error code on an LG refrigerator?
Repair costs depend on the root cause. If the issue is simply a misaligned door or a worn gasket, costs are relatively low, typically ranging from $20 to $80 for a replacement gasket plus labor if a technician is involved. A faulty door switch is generally an inexpensive part, often in the $15 to $50 range, though labor adds to the total. Control board replacement, if needed, is the most expensive outcome and can range from $150 to $400 or more depending on the model.

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