LG Refrigerator Error Code Er 8

Er 8 on an LG refrigerator indicates a short circuit in the ice maker temperature sensor. The control board monitors the sensor's resistance through connector CON9 and flags this code when the reading drops abnormally low. This fault typically causes the ice maker to stop functioning until the sensor or wiring is repaired.

The refrigerator's cooling and freezing functions typically continue to operate normally with an Er 8 code present. The error is isolated to the ice maker sensor circuit, so food safety is generally not at risk. However, ice production will likely be suspended until the fault is resolved.

A reset may temporarily clear the Er 8 code from the display, but the error will return if the underlying short circuit in the ice maker sensor or its wiring has not been corrected. A reset is useful for confirming whether a fault is intermittent, but it is not a permanent fix. The sensor resistance at CON9 terminals 1 and 2 should be tested to confirm the fault is resolved before relying on the ice maker again.

Some causes of Er 8 are DIY-accessible, such as reseating the CON9 connector or cleaning corroded terminals. If the sensor itself has shorted internally, replacing the ice maker thermistor is a straightforward part swap for someone comfortable with basic appliance disassembly. However, if the fault is traced to the main control board or complex wiring damage, professional repair is recommended.

If the ice maker thermistor is the cause, parts typically range from $15 to $50 depending on the model. If professional labor is required, total repair costs including diagnosis and installation generally fall between $100 and $250. Wiring harness repairs or control board replacements would fall at the higher end of the cost range.