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LG Refrigerator Error Code Er SS

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 11, 2026
⚠ Medium Severity 🔧🔧 Moderate DIY Also shown as: SS

Freezer sensor error — freezer compartment thermistor out of range

The most common cause of the Er SS error on a LG refrigerator is freezer thermistor failed (~45% of cases); start with: power cycle.

💰 DIY cost: $0–$25 👨‍🔧 Pro cost: $130–$260 Save $130+ by doing it yourself
LG Refrigerator error code Er SS on the display panel
How the Er SS code appears on a LG refrigerator display

What Does Error Code Er SS Mean on a LG Refrigerator?

Freezer sensor error — freezer compartment thermistor out of range.

Er SS indicates the main board is reading the freezer compartment thermistor outside its valid resistance window — an open, shorted, or otherwise implausible signal. Unlike Er rF, which points at the fan circuit, or FS/1F which reflect defrost and evaporator conditions, Er SS isolates the freezer sensor input specifically. With no trusted temperature feedback, the board defaults to timed cooling, so the compartment drifts warmer or colder than the setpoint until the sensor or its wiring is restored.

Models affected: LG refrigerators using the Er SS / SS sensor code convention, spanning French-door and side-by-side models such as the LFXS26973S, LFXS28968S, LRFVS3006S, LMXS28626S, and LRFDS3016S
What owners report: Owners commonly report this code appearing after a hard freeze-up or when frost builds around the sensor clip, and a simple power cycle sometimes clears a transient reading. Many find the fault traces to a corroded or loose connector rather than the thermistor itself, so inspecting the harness before buying parts is often the quick win.

What Causes Error Code Er SS?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Freezer thermistor failed 45% of cases
  2. 2
    Corroded or loose sensor connector 30% of cases
  3. 3
    Frost intrusion at the sensor mount 15% of cases
  4. 4
    Board sensing circuit fault 10% of cases

How to Fix LG Refrigerator Error Code Er SS

🔧🔧 Moderate DIY Est. time: 30–60 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Power cycle

    Unplug for 2 minutes; a transient reading fault will clear on reboot.

  2. 2

    Test the thermistor

    Unplug the unit, locate the sensor clipped to the freezer evaporator area, and measure resistance — it should change smoothly as the sensor warms in your hand; open or fixed readings confirm failure.

    ⚠️ Unplug the refrigerator before removing the freezer rear panel.
  3. 3

    Replace the sensor

    Swap the thermistor and seal the harness splice well against moisture.

    🔩 LG refrigerator thermistor ($10–$25)

How to Reset Error Code Er SS

Unplug for 2 minutes after the repair; the error clears once the sensor reads in range.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full LG refrigerator reset guide → Enter diagnostic mode →

Did this guide fix your appliance?

When to Call a Professional

If a new sensor still throws Er SS, the main board input circuit needs professional testing.

Average professional repair cost for this issue: $130–$260

Related Error Codes

FS
Freezer sensor fault — freezer thermistor circuit open or shorted
⚠ Medium Severity
1F
Freezer (ice room) fan fault — icing fan circuit failure
⚠ Medium Severity
Er rF
Refrigerator fan error — fresh-food compartment fan not running
⚠ High Severity

Find Replacement Parts

Use these links to find the exact replacement parts for your LG Refrigerator:

🔩
Search PartSelect
LG Refrigerator repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More LG Refrigerator Error Codes

Er FF Freezer fan error — fan motor not operating Er dH Defrost heater error — defrost cycle not completing Er CF Condenser fan motor error Er FS Freezer temperature sensor error Er IS Ice maker sensor failure Er IF Ice maker fan error

Frequently Asked Questions

Can I keep using my LG Refrigerator when error Er SS appears? +
You often can for a cycle or two, but the sensor issue behind Er SS will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.
What most commonly causes Er SS on a LG Refrigerator? +
Across reported LG refrigerator repairs, the most frequent is freezer thermistor failed (45% of cases), corroded or loose sensor connector (30%), then frost intrusion at the sensor mount (15%). Check them in that order before replacing any parts.
Er SS keeps coming back after a reset — what should I check next? +
A reset only clears the stored Er SS fault; if it returns, the sensor problem is still present. Move on to the physical checks — power cycle, then test the thermistor — since the code will reappear until the root cause is resolved. This is a moderate job — a multimeter and some disassembly are usually involved.
How much does it cost to fix LG Refrigerator error Er SS? +
A DIY repair typically runs $0–$25 in parts, versus $130–$260 for a professional service call, so handling it yourself saves around $130. Expect the work to take roughly 30–60 minutes.
Which LG Refrigerator models show error Er SS? +
Er SS is documented on LG refrigerators using the Er SS / SS sensor code convention, spanning French-door and side-by-side models such as the LFXS26973S, LFXS28968S, LRFVS3006S, LMXS28626S, and LRFDS3016S. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 11, 2026.

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