LG Freezer Error Code E2

The E2 code means the right compartment temperature sensor has a wiring fault, either an open circuit or a short circuit. The PCB monitors the sensor's voltage output, and a normal reading falls between 0.5 Vdc and 4.5 Vdc. A reading near 5 Vdc indicates a broken or open circuit, while a reading near 0 Vdc indicates a short. The freezer displays E2 when the signal falls outside that acceptable range.

Continuing to run the freezer with an active E2 code is not advisable. Without a functioning right compartment sensor, the PCB cannot accurately regulate temperature in that section, which means food stored there may not be kept at a safe temperature. The compressor may also operate outside its intended parameters without proper sensor feedback.

A power reset may temporarily clear the E2 code from the display, but the code will return if the underlying wiring or sensor fault has not been corrected. The PCB continuously monitors the sensor voltage, so any persistent open circuit or short circuit will trigger the fault again shortly after the unit restarts. The sensor circuit must be repaired or the component replaced to permanently resolve the error.

A knowledgeable DIYer can diagnose this fault by disconnecting connector CON3 from the PCB and measuring voltage across pins 1 and 2 to locate the problem. If the issue is a loose connector or a visible wire repair, this may be a straightforward fix. Replacing the thermistor sensor is also a moderate DIY task, but if the PCB is at fault, professional repair is recommended.

Repair costs vary depending on the failed component. A replacement thermistor sensor typically costs between 15 and 50 dollars for the part alone. If professional labor is needed, total costs including diagnosis and labor generally range from 100 to 250 dollars. A PCB replacement, if required, will push the total cost significantly higher.