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LG Refrigerator Error Code Er gF

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 10, 2026
⚠ Medium Severity 🔧🔧 Moderate DIY Also shown as: gF

Flow sensor error — low water pressure or flow meter fault

💰 DIY cost: $30–$110 👨‍🔧 Pro cost: $150–$320 Save $120+ by doing it yourself
LG Refrigerator error code Er gF on the display panel
How the Er gF code appears on a LG refrigerator display

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

Flow sensor error — low water pressure or flow meter fault.

Er gF flags the water flow sensor (flow meter) on the dispenser/ice-maker line. The board uses it to measure how much water flows during a fill; if it sees no flow or an implausible count, it raises gF. Low household water pressure, a closed or kinked supply, or a clogged inlet are common causes, alongside a failed flow sensor. If the ice maker is overfilling, a stuck flow meter is the prime suspect.

What Causes Error Code Er gF?

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

  1. 1
    Low house water pressure or supply valve not fully open 35% of cases
  2. 2
    Kinked or frozen water supply line 25% of cases
  3. 3
    Clogged inlet/filter restricting flow 20% of cases
  4. 4
    Flow sensor (meter) failed 20% of cases

How to Fix LG Refrigerator Error Code Er gF

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

    Check the water supply

    Confirm the saddle/supply valve is fully open and the line behind the fridge isn't kinked or frozen.

  2. 2

    Replace a clogged water filter

    A heavily clogged filter restricts flow enough to trigger gF; install a fresh OEM filter.

    🔩 LG refrigerator water filter ($30–$55)
  3. 3

    Inspect the inlet valve and flow sensor

    If supply and filter are good, test the inlet valve and the flow meter for proper operation.

    🔩 LG water inlet valve ($40–$110)
    ⚠️ Unplug and shut off water before servicing the valve.

How to Reset Error Code Er gF

Confirm the supply valve is fully open and the filter is fresh, then power cycle. If gF persists, test the inlet valve and flow sensor.

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

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When to Call a Professional

If water pressure, filter, and inlet valve are confirmed good but Er gF persists, the flow sensor or its control board input has failed.

Average professional repair cost for this issue: $150–$320

Related Error Codes

Er IF
Ice maker fan error
⚠ Medium Severity
Er IS
Ice maker sensor failure
⚠ Medium 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
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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 CO Communication error — main board to sub-board dS Defrost sensor open circuit

Frequently Asked Questions

Can I keep using my LG Refrigerator when error Er gF appears? +
You often can for a cycle or two, but the water-supply issue behind Er gF will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.
What most commonly causes Er gF on a LG Refrigerator? +
Across reported LG refrigerator repairs, the most frequent is low house water pressure or supply valve not fully open (35% of cases), kinked or frozen water supply line (25%), then clogged inlet/filter restricting flow (20%). Check them in that order before replacing any parts.
Er gF keeps coming back after a reset — what should I check next? +
A reset only clears the stored Er gF fault; if it returns, the water-supply problem is still present. Move on to the physical checks — check the water supply, then replace a clogged water filter — 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 gF? +
A DIY repair typically runs $30–$110 in parts, versus $150–$320 for a professional service call, so handling it yourself saves around $120. Expect the work to take roughly 30–60 minutes.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 10, 2026.

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