Dishwasher Not Filling with Water? Inlet Valve 5221DD1001F – Fix No-Fill & Leak Fast

A failed water inlet valve is the most common reason an LG dishwasher won’t fill with water, fills too slowly, or leaks from the bottom of the unit. In most LG dishwashers, this is caused by a failed water inlet valve assembly. When it fails, the solenoid can no longer open to allow water into the tub — leaving the dishwasher running dry, triggering error codes, or leaking from a cracked valve body. ⚡ Common failure point in LG-built dishwashers. Part 5221DD1001F is the genuine OEM replacement valve assembly that restores proper water fill with no modifications required.

❓ Is This the Right Part?

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

• ✔ Your dishwasher powers on and the cycle starts normally
• ✔ The home water supply valve under the sink is fully open and confirmed OK
• ✔ The water supply line and fill hose are not kinked or blocked
• ✔ The door latch and control board are functioning correctly
• ✔ ONLY problem is no water entering the tub, slow fill, or water leaking from the valve area

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

🔧 Common Symptoms

• Dishwasher not filling with water — cycle runs but tub stays dry
• Dishwasher fills very slowly and cycle takes much longer than normal
• Water leaking from the bottom front of the dishwasher during fill
• Dishwasher stops mid-cycle with an IE (inlet error) or water supply error code
• Humming sound at the start of the cycle but no water enters the tub
• Dishes come out dirty or with detergent residue — insufficient water for wash

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

✔ In most cases, replacing this water inlet valve restores normal fill and wash operation immediately.

📦 Part Details

• Part Number: 5221DD1001F
• Type: Dishwasher Water Inlet Valve Assembly – solenoid-operated valve controlling water supply to the tub
• Replaces: OEM direct-fit water inlet valve assembly for compatible LG dishwasher models (no modification required)
• Brands: LG

⚙️ Installation

Skill Level: MODERATE — 30–45 minutes. Unplug the dishwasher and shut off the water supply valve under the sink before beginning. The inlet valve is accessed by removing the lower kick panel at the front of the unit — disconnect the water supply line, the fill hose, and the wiring harness, then unbolt the valve from the mounting bracket. Install the new valve in the same orientation, reconnect all connections, restore water and power, and run a short cycle to confirm fill and check for leaks before reinstalling the kick panel.

✓ Compatible Models

Confirmed compatible with LG dishwasher models using part 5221DD1001F. Contact us to verify your model number before ordering — always confirm your original part number matches before purchasing a water inlet valve.

💡 Pro Tip