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LG·refrigeratorhigh severity
LG Error Code Er RS
Fridge sensor error
Common Causes
- 1Thermistor failure
Step-by-Step Troubleshooting
- 1
Locate the fresh food thermistor inside the refrigerator compartment — on LG French Door models it is clipped to the air duct housing near the top
- 2
Remove the sensor clip and disconnect the 2-pin connector, then measure resistance — at 37F (3C) it should read approximately 25k ohms
- 3
Inspect the wire harness path from the sensor to the main board for any signs of rodent damage or pinching at the hinge area
- 4
Check that the air damper between freezer and fridge compartments is not stuck open, which can cause the sensor to read false low temperatures
- 5
Replace the thermistor if resistance is out of specification or reads open/short circuit
Pro Diagnostic Tip
On LG Door-in-Door models, there are two fresh food sensors — one for the main compartment and one for the door-in-door section. Smart Diagnosis via the LG ThinQ app will identify which specific sensor circuit has faulted.
You Might Also Notice
- •Fresh food section is too warm or too cold
- •Lettuce freezing in the crisper drawer
- •Temperature display flashing or showing error
- •Compressor running erratically
Parts, Cost & Difficulty
Repair Difficulty
Moderate — Some Experience NeededEstimated Repair Cost
$130–$230
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
EBG61285804 (Refrigerator Thermistor)AJU75152601 (Thermistor Assembly with Harness)
Do You Have the Right Tools?
Refrigerant gauges ($200+), vacuum pump ($250), leak detector ($150), and EPA-certified recovery equipment. Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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Refrigerant (R-134a/R-600a) requires EPA certification to handle. Improper discharge is a federal violation and health hazard. Our techs are licensed and insured — let them handle the risk.
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Get Professional Help Now
Error code Er RS is a high-severity issue that can cause further damage to your refrigerator if left unresolved. A licensed technician can diagnose and fix it the same day.
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Frequently Asked Questions
What does LG error code Er RS mean?
LG error code Er RS indicates: Fridge sensor error. This is a high-severity issue affecting your refrigerator.
How do I fix LG error code Er RS?
Locate the fresh food thermistor inside the refrigerator compartment — on LG French Door models it is clipped to the air duct housing near the top Then, Remove the sensor clip and disconnect the 2-pin connector, then measure resistance — at 37F (3C) it should read approximately 25k ohms Then, Inspect the wire harness path from the sensor to the main board for any signs of rodent damage or pinching at the hinge area There are 2 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How do I know if my refrigerator has error Er RS?
Besides the error code on the display, common signs include: Fresh food section is too warm or too cold; Lettuce freezing in the crisper drawer; Temperature display flashing or showing error. If you notice any of these symptoms, check your refrigerator's display panel for error code Er RS.
How much does it cost to fix LG Er RS?
Repair costs for LG Er RS typically range from $130 to $230 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.