How to Replace DD31-00016A Drain Pump Motor on Samsung Dishwasher — Step-by-Step

You press the start button, and your Samsung dishwasher hums for a few seconds before displaying an error code. The dishes sit in murky standing water. If you hear a buzzing noise but water won't drain from your DW80B7070US or DW80H9930MO, the drain pump motor has likely failed. This DD31-00016A replacement gets your dishwasher draining properly again — and you can swap it yourself in under an hour.

What You Need Before Starting

Tools required:

• Phillips screwdriver
• Flathead screwdriver
• Towels and shallow pan (for water)
• Needle-nose pliers
• Work gloves

Estimated time: 45-60 minutes
Difficulty: Moderate

This repair works for Samsung dishwasher models including DW60M9990AP, DW80B6060UG, DW80B7070AP, DW80B7071US, and dozens of other compatible models listed on the product page.

Safety First

Disconnect power at the circuit breaker before starting. Don't just turn off the dishwasher — kill the breaker. The drain pump connects directly to your home's electrical system. Also turn off the water supply valve under your sink. Expect residual water in the sump area, so keep towels handy. Wear gloves when handling the old pump — drainage systems accumulate food debris and sharp objects.

Step 1: Remove the Lower Dish Rack and Spray Arm

Pull out the lower dish rack completely. The spray arm sits on a center mount — twist it counterclockwise and lift it straight up. Some models have a locking clip you'll need to press before twisting. Set these parts aside on a clean surface.

Step 2: Access the Dishwasher Sump Area

Remove the cylindrical filter assembly by turning it counterclockwise and lifting out. Underneath, you'll see the sump cover — typically secured by 2-3 Torx or Phillips screws around the perimeter. Remove these screws and carefully lift the sump cover. Water will be present here, so have your towels ready. Use a shallow pan to catch any remaining water in the basin.

Step 3: Disconnect and Remove the Old Drain Pump

The drain pump sits at the bottom of the sump assembly. You'll see a wire harness connector on the pump body — press the locking tab and pull straight off. Don't yank the wires. Next, locate the drain hose clamp (either a spring clamp or screw clamp) and remove it with pliers or a screwdriver. Twist the hose to break the seal, then pull it off the pump outlet. Three mounting screws typically secure the pump to its bracket — remove these and lift the entire pump assembly out. It'll be heavier than expected due to water trapped inside.

Step 4: Install the DD31-00016A Replacement Pump

Position your new DD31-00016A pump in the mounting bracket, aligning the screw holes. Thread in the three mounting screws and tighten evenly — don't overtighten or you'll crack the plastic housing. Reconnect the drain hose to the pump outlet and secure it with the clamp. Make sure it's seated fully on the barbed fitting. Finally, push the wire harness connector onto the pump terminals until you hear it click. Give it a gentle tug to confirm it's locked.

Step 5: Reassemble and Test

Replace the sump cover and secure it with the screws you removed earlier. Reinstall the filter assembly by dropping it into place and turning clockwise until it stops. Mount the spray arm back on its center hub. Slide the lower rack back in. Turn on your water supply valve and restore power at the breaker. Run a rinse cycle and watch for proper drainage — you should hear the pump engage after about 30 seconds. Check under the dishwasher for any leaks during the first full cycle.

Testing After Installation

Run a quick rinse cycle without dishes. Listen for the pump to activate — it should be noticeably quieter than the old failing unit. After 5 minutes, open the door and check that water has drained completely from the tub. No standing water should remain. If the dishwasher displays error codes like 5E or OE after replacement, double-check that the wire connector is fully seated and the drain hose isn't kinked. Check underneath the unit 24 hours after installation to confirm there's no moisture around the sump area.

Frequently Asked Questions

Will this DD31-00016A pump fit my Samsung dishwasher model?

This pump replaces AP5917178, PS9606350, and part number 4000925. It's compatible with Samsung DW60, DW80B, and DW80H series dishwashers manufactured from 2016 onward. Check the full compatibility list on the product page or verify your model number on the data plate inside your dishwasher door.

Why is my new drain pump making a loud grinding noise?

If the pump runs but sounds rough, there's likely debris stuck in the impeller housing. Dishwashers with poor filtration can allow broken glass, toothpicks, or twist ties to reach the pump. Remove the pump and inspect the inlet — flush it thoroughly with water before reinstalling. Also verify you've removed all shipping clips or protective covers from the new pump.

How long should a Samsung dishwasher drain pump last?

Drain pumps typically last 5-8 years with normal use. Hard water areas see shorter lifespans due to mineral buildup on the impeller. Running your dishwasher without proper filter maintenance accelerates wear. If your pump failed before the 3-year mark, check your water quality and clean the filter assembly monthly to protect the new pump.