mypros+
Error code reference

LG Refrigerator Error Code E

Refrigerator sensor failure

LG codesLG refrigerator codes

Refrigerator sensor failure — short or open wires on the refrigerator sensor (located in the refrigerator control box).

First step from the service manual

Check refrigerator sensor resistance; compressor/fan cycles 15 minutes ON, 15 minutes OFF; defrost heater operates normally.

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

MyPros+ Max

Get the full diagnostic procedure for E.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What E means on a LG refrigerator

The E error code on an LG refrigerator indicates a refrigerator sensor failure caused by a short circuit or open wire condition in the refrigerator temperature sensor, which is located inside the refrigerator control box. This sensor is a thermistor, a resistive component whose electrical resistance changes predictably with temperature. When the control board reads a resistance value outside the expected range, either because the circuit is shorted to near-zero ohms or open with infinite resistance, it flags the E code and can no longer accurately monitor compartment temperature.

Despite the sensor fault, the refrigerator enters a failsafe operating mode rather than shutting down completely. In this mode, the compressor and evaporator fan cycle in fixed intervals of 15 minutes ON followed by 15 minutes OFF, and the defrost heater continues to operate normally. This behavior is an important diagnostic clue: it confirms the control board itself is functioning and that the fault is isolated to the sensor circuit rather than the refrigerant system or defrost components.

Diagnosis should begin with a resistance check of the refrigerator sensor. Disconnect the sensor from the control board and measure resistance across the sensor terminals with a multimeter. An open circuit will read as infinite resistance (OL on most meters), while a shorted sensor will read near zero ohms. Also inspect the wiring harness between the sensor and the control box for any signs of pinching, chafing, corrosion, or broken connectors, as damaged wiring can produce identical resistance readings to a failed sensor.

Source: manufacturer service documentation.

Common causes of E

  1. 01

    Failed refrigerator thermistor

    Part replacement

    The thermistor sensor itself has failed internally, producing an open or shorted resistance reading that falls outside the control board's acceptable range. This is the most common root cause and is confirmed by measuring resistance directly across the sensor terminals.

  2. 02

    Open or broken sensor wiring

    Part replacement

    A break in the wiring harness between the sensor and the control box creates an open circuit, mimicking a failed sensor. Inspect the harness routing inside the refrigerator compartment for pinched, cut, or corroded wires.

  3. 03

    Loose or corroded sensor connector

    Wiring / connection

    The connector at the control box or sensor end may have worked loose or developed corrosion, creating intermittent or complete loss of continuity. Unplugging and reseating the connector, or cleaning the terminals, can sometimes resolve the fault.

  4. 04

    Shorted sensor wiring

    Part replacement

    Wiring insulation that has chafed against a metal edge or been pinched can cause two conductors to contact each other, creating a short circuit condition. This reads as near-zero resistance on a multimeter and requires locating and repairing the damaged section of harness.

  5. 05

    Faulty refrigerator control board

    Part replacement

    In rare cases, the control board's sensor input circuit may be damaged, causing it to misread a properly functioning sensor. This should only be considered after the sensor and wiring have been tested and confirmed good.

See the test procedure for each cause

Frequently asked questions about E

What does E mean on a LG refrigerator?
The E error code on an LG refrigerator indicates a failure in the refrigerator compartment temperature sensor, located in the refrigerator control box. The fault is caused by either a short circuit or an open circuit condition in the sensor or its wiring. When this code is active, the refrigerator enters a failsafe mode where the compressor and fan cycle 15 minutes on and 15 minutes off, while the defrost heater continues to operate normally. A resistance check of the sensor is the recommended first diagnostic step.
Can I fix the E error code on my LG refrigerator myself?
A knowledgeable DIYer can diagnose and fix this error code in many cases. Start by inspecting the sensor wiring harness for visible damage and checking that the connector at the control box is fully seated. If you have a multimeter, you can test the sensor resistance directly. Replacing the refrigerator thermistor is generally a straightforward repair, but if the wiring harness or control board is at fault, the repair becomes more complex and may warrant professional service.
Is it safe to keep using my LG refrigerator when the E code is showing?
The refrigerator will continue to run in a failsafe mode, cycling the compressor and fan on 15-minute intervals, but it cannot regulate temperature accurately. Food safety could be compromised if the compartment temperature rises too high, especially in warmer ambient conditions. It is best to check compartment temperatures with a separate thermometer and address the repair promptly rather than relying on the failsafe mode for extended periods.
How much does it cost to repair the E error code on an LG refrigerator?
Repair costs vary depending on the root cause. If only the thermistor sensor needs replacement, parts typically cost in the range of $15 to $50, and a professional labor charge would add $100 to $200 depending on your area. If the wiring harness or control board is at fault, total repair costs could range from $150 to $400 or more. Diagnosing the fault yourself before calling a technician can help you understand the scope of the repair.
Will resetting my LG refrigerator clear the E error code?
A power reset may temporarily clear the E code, but it will return if the underlying sensor fault is still present. Unplugging the refrigerator for a few minutes and restoring power is worth trying, as a momentary wiring connection issue could resolve on its own. However, if the thermistor has failed or the wiring is physically damaged, the code will reappear and the faulty component must be repaired or replaced to permanently clear the error.

Related LG refrigerator codes

All LG refrigerator codes
View all 485 LG refrigerator codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass