LG Refrigerator Leaking from Filter Housing or Dispenser Not Working After Filter Removal? Bypass Plug ABN73019101 – Fix Filter Port Issues Fast

A missing or damaged water filter bypass plug is the most common cause of water leaking from the filter housing or a persistent filter error code on an LG refrigerator that is not using a water filter. In most LG refrigerators with an internal water filter, the filter housing requires either an installed filter or a bypass plug cap to seal the port and maintain water pressure to the dispenser and ice maker. When the bypass plug is missing, cracked, or improperly seated, water leaks from the filter compartment and the dispenser or ice maker may stop working entirely. ⚡ Required when operating an LG refrigerator without a water filter installed. Part ABN73019101 is the genuine OEM bypass plug cap that seals the filter port and restores full dispenser and ice maker operation immediately — no modification required.

❓ Is This the Right Part?

This is the correct fix if ALL of the following are true:

• ✔ Refrigerator powers on and cooling functions normally
• ✔ No water filter is currently installed in the filter housing
• ✔ Water supply line to the fridge is connected and pressure is normal
• ✔ Dispenser or ice maker stopped working after filter was removed
• ✔ ONLY problem is water leaking from filter housing, or dispenser/ice maker not working without a filter installed

Not sure? Send us your model number — we'll confirm before you order.

🔧 Common Symptoms

• Water leaking from the filter housing or filter compartment — most common complaint
• Water dispenser not working after filter was removed
• “Filter” indicator or error code that won’t clear
• Ice maker stopped producing ice after filter removal
• Low water pressure at the dispenser
• Dripping or pooling water inside the refrigerator near the filter port

✔ If these symptoms match, this is the most likely cause in the system.

✔ In most cases, installing this bypass plug cap restores full dispenser and ice maker operation immediately.

📦 Part Details

• Part Number: ABN73019101
• Type: Refrigerator Water Filter Bypass Plug Cap Assembly — seals the internal filter port when no filter is installed
• Replaces: OEM direct-fit bypass cap (no modification required)
• Brands: LG

⚙️ Installation

Skill Level: EASY — 2 minutes. No tools required and no need to disconnect power or water for this repair. Locate the filter housing inside the refrigerator compartment (typically upper right corner or bottom grille depending on model). Insert the bypass plug cap into the filter port and twist clockwise until it locks into position — the same motion as installing a filter. Run the dispenser for 30 seconds to purge any air from the line and confirm steady water flow before closing the compartment.

✓ Compatible Models

Confirmed compatible with select LG French door, side-by-side, and bottom-freezer refrigerator models with internal water filter housings. Contact us to verify your model number before ordering.

💡 Pro Tip