LG · Washer Moderate

Ed3 — Auto-dose pump open circuit / not dispensing

On models with the auto-dispense (TurboWash/AI Dosing) tank, Ed3 means the board commanded the dose pump to run but no detergent was actually pumped — the level didn't drop. Either the pump, the line, or the level sensor is the issue.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Verified against
lgparts.com ↗

How to fix it

  1. Open the auto-dispense tank, confirm detergent is present, and check it isn't thickened/separated.
  2. Empty the tank, rinse with warm water, and refill with fresh HE detergent diluted per the manual.
  3. Trace the small silicone tube from the tank toward the tub — straighten kinks and confirm it's seated on both barbs.
  4. Run an Auto-Dispense prime / calibration cycle from the menu (model-dependent).
  5. If Ed3 returns, remove the tank assembly and inspect the pump head for crusty detergent — clean with warm water.
  6. Test the pump motor — should run when triggered; silent = bad.
  7. Replace the dose pump if it doesn't run; replace the level sensor if pump runs but level doesn't drop.

Why it happens

Typical signs: Ed3 on the display · Auto-dispense tank doesn't draw down between loads · Clothes coming out under-cleaned · Code appears even when tank is full

  • Air-locked or clogged dose pump Dried detergent gummed up the peristaltic pump head.
  • Kinked or detached dose line Silicone tube from tank to tub pinched or off the barb.
  • Empty / wrong-viscosity detergent Thick detergent or low level fools the level sensor.
  • Failed dose pump motor Pump motor windings open.
  • Failed level sensor in tank Reports 'no change' even though pump ran.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Auto-dispense dose pump Common replacement
    Amazon →

More LG washer codes

AE AE — Leak / auto shut-off (base pan water detected) CE CE — Overcurrent Error CL CL — Child Lock Is On dE dE / dE1 / dE2 Error — Door Will Not Lock dE1 dE1 — Door not fully closed dE2 dE2 — Door closed but won't lock

All LG codes → All washer codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: lgparts.com.