LG Refrigerator Error Code Er IM2

Er IM2 indicates a short circuit condition in the ice maker's ice-making sensor circuit. The control board monitors this sensor to track ice tray temperature during the freezing cycle, and it throws this code when it detects abnormally low resistance consistent with a short. Ice production is typically suspended while the fault is active. The first step is checking that all sensor cable connectors are fully seated.

The refrigerator's cooling and food preservation functions are generally not affected by an Er IM2 fault, which is isolated to the ice maker circuit. However, the ice maker will likely stop producing ice while the error is active. You can continue using the refrigerator for food storage while you diagnose and repair the ice maker issue.

A power reset, done by unplugging the refrigerator for a few minutes and restoring power, may temporarily clear the code. However, if the underlying short circuit in the sensor or wiring has not been corrected, the error will return once the control board runs its diagnostic cycle again. A reset is useful for confirming whether the fault is intermittent, but it is not a substitute for diagnosing and repairing the root cause.

In many cases, yes. Start by locating the ice-making sensor connector and pressing it firmly into place at both ends of the harness, as a loose connection is a frequent cause of this error. If the code returns after reseating the connector, you can test the sensor with a multimeter for a shorted reading and replace the component if needed. Wiring repairs and board replacement are more advanced and may require a technician.

If the fix is simply reseating a loose connector, there is no parts cost involved. Replacing the ice-making sensor thermistor typically costs between $15 and $60 for the part, depending on the specific model. If the ice maker assembly or control board requires replacement, costs can range from $80 to $300 or more for parts, plus labor if a technician is involved.