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LG Refrigerator Er gF Error Code

Water flow sensor error. Here is what it means and how to clear it, easiest fix first.

Er gF
Easy DIY fix

The water flow sensor is reporting a problem, often because water is not reaching the fridge properly. A closed supply valve, a kinked line or low household water pressure are the common causes. If the ice maker overfills instead, the flow sensor itself may be faulty.

Safety first: unplug the refrigerator (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix LG Er gF

  1. Reset the power

    Unplug the refrigerator for about 60 seconds and plug it directly into a wall outlet, not a power strip. Give it up to 5 minutes to restart.

  2. Open the supply valve fully

    Find the shutoff valve feeding the fridge water line, often under the sink or behind the fridge, and make sure it is turned fully open.

  3. Check the water line

    Slide the fridge out carefully and look along the line for kinks or crushing. Straighten any bends and make sure the fridge is not pushed back hard against it.

  4. Confirm water pressure

    Your owner's manual lists the water pressure range the fridge needs. If you suspect low pressure in your home, a plumber can measure it.

When to call a technician

If water supply and pressure are fine but Er gF keeps returning, or the fridge overfills, request service for the flow sensor or water valve.

Parts that commonly cause Er gF

Order parts by your exact model number so they fit.

Other LG refrigerator codes

Frequently asked questions

What does Er gF mean on a LG refrigerator?

The water flow sensor is reporting a problem, often because water is not reaching the fridge properly. A closed supply valve, a kinked line or low household water pressure are the common causes. If the ice maker overfills instead, the flow sensor itself may be faulty.

Can I fix LG Er gF myself?

Usually, yes. Most Er gF problems clear with simple checks you can do at home. Start with the first step above: reset the power.

What if Er gF keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when Er gF appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

References