LG Dishwasher Won’t Fill or Overfills? Inlet Water Valve 5221DD1001E – Fix Water Flow Failures Fast

If your LG dishwasher won’t fill with water, fills too slowly, or floods mid-cycle, the inlet water valve is the most common cause. In most LG dishwashers, this dual-solenoid valve controls all water entering the machine — when it fails, the dishwasher either gets no water, too much, or stops partway through a cycle with no clear error. ⚡ Common failure point in LG-built dishwashers across 70+ models. Part 5221DD1001E is the current OEM revision that supersedes 5221DD1001C and restores full water flow control immediately.

❓ Is This the Right Part?

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

• ✔ Dishwasher powers on and door latches normally
• ✔ Drain pump runs and drain line is clear
• ✔ Home water supply pressure is confirmed OK (40–60 PSI)
• ✔ Float switch and overflow sensor test OK
• ✔ ONLY problem is no fill, slow fill, overfill, or cycle stopping at the fill stage

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

🔧 Common Symptoms

• Dishwasher won’t fill with water — most common complaint
• Fills too slowly — cycle takes much longer than normal
• Overfills or floods — water on the floor under the door
• Wash cycle stops partway through at the fill stage
• Humming noise from the valve area with no water flow
• Error codes related to water supply or fill timeout (IE, FE)

✔ If these symptoms match, the inlet water valve is the most likely failed component in the system.

✔ In most cases, replacing this valve restores normal fill operation immediately.

📦 Part Details

• Part Number: 5221DD1001E
• Type: Dual-Solenoid Dishwasher Inlet Water Valve Assembly
• Replaces: OEM direct-fit valve — supersedes 5221DD1001C, 5209JA1044A, DIV-118-5 (no modification required)
• Brands: LG
• OEM Option: Genuine LG factory part — guaranteed fit and full OEM lifespan
• XPart Option: Premium aftermarket alternative meeting or exceeding OEM specs at a lower price point. Not affiliated with or endorsed by LG.

⚙️ Installation

Skill Level: MODERATE — 20–30 minutes. Disconnect power at the breaker and shut off the water supply before starting. The valve is located behind the lower access panel at the front base of the dishwasher. Disconnect the water supply line and wire harness connectors, unscrew the mounting bracket, and swap the valve. Reconnect the supply line and restore water pressure — check for leaks before restoring power and running a full test cycle to confirm fill operation.

💡 Pro Tip

Model hub pages: LDS5040ST, LDS5040WW, LDS5540ST, LDS5540WW, LDS5560ST, LDS5774ST, LDF5545BD, LDF5545BB, LDF5545ST, LDF5545SS, LDF5545WW, LDF5678BD, LDF5678SS, LDF5678ST, LDF7551BB, LDF7551ST, LDF7551WW, LDF7561ST, LDF7774BB, LDF7774BD, LDF7774ST, LDP5676BD, LDP6797BB, LDP6797BD, LDP6797BM, LDP6797SS, LDP6797ST, LDP6797WW, LDP6809BD, LDP6809BM, LDP6809SS, LDP6810BD, LDP6810SS, LDP7708BD, LDP7708ST, LDP7808BD, LDP7808SS, LDPN6761T, LDPS6844AS, LDT5665BB, LDT5665BD, LDT5665ST, LDT5665WW, LDT5678BD, LDT5678SS, LDT5678ST, LDT6809BD, LDT6809SS, LDT7797BD, LDT7797BM, LDT7797ST, LDT7808BD, LDT7808BM, LDT7808SS, LDT7808ST, LDB4548ST, LDFN343LS, LDFN3432T, LDFN4542W, LDTS5552S, LSDF9963ST, LSDT9908BD, LSDT9908SS, LSDT9908ST, LUDP8908SN, LUDP8996SN, LUDP8997SN, SKSDW2401S

✓ Model-Specific Repair Pages