LG Refrigerator Error Code Er gF

Er gF means the control board has detected a defect in the flow meter circuit. The flow meter is a sensor that monitors water moving into the refrigerator for the ice maker and water dispenser. The fault can come from the sensor itself, a wiring problem at the flow meter connector, restricted water input, or water pressure that is too low.

The refrigerator's cooling and food storage functions will generally continue operating with Er gF active, but the ice maker and water dispenser may not work correctly because the control board cannot confirm water is flowing properly. You can still use the unit for food storage, but do not rely on ice production until the fault is resolved. Leaving it unaddressed long-term can prevent the ice maker from filling and may cause it to run dry.

Yes, low water pressure is one of the direct causes listed for the Er gF code. If the pressure at the water inlet drops below roughly 20 PSI, the flow meter cannot detect sufficient flow and the control board logs the fault. Check your home's water pressure and make sure no other high-demand appliances are running simultaneously when testing. If pressure is adequate and the code persists, the flow meter sensor or its wiring connection is the next area to inspect.

Start by confirming the water shutoff valve behind the refrigerator is fully open and the supply line is not kinked. Next, check that your household water pressure meets the minimum 20 PSI requirement. If supply and pressure are fine, unplug the refrigerator and inspect the flow meter's wiring harness connector for loose or corroded pins and reseat it. If the code returns after these checks, the flow meter sensor itself is likely defective and needs to be replaced.

If the fix is a supply line adjustment or water pressure issue, the cost is minimal or free. A replacement flow meter sensor typically costs between $20 and $60 for the part. If you hire a technician for diagnosis and installation, expect a total repair cost in the range of $100 to $200 depending on your area and service rates. The sensor replacement itself is a moderate DIY task that requires accessing the water inlet area and disconnecting the wiring harness.