Samsung Dishwasher Drain Pump

Samsung dishwashers (DW model series) integrate SmartThings diagnostics and features like WaterWall spray technology and Zone Booster nozzles, but when the drain pump fails, you need specific Samsung procedures — not generic dishwasher advice. This guide covers the DD31-00005A replacement with Samsung-specific access procedures, the DD-prefix part numbering system, and the diagnostic steps that help you confirm the failure before spending money on parts.

Symptoms That Indicate Drain Pump Failure

• Standing water in the tub after cycle — pump cannot evacuate water. Clean the filter first (twist-out at tub floor center) before assuming pump failure
• Grinding or humming during drain phase — impeller jammed with glass, bones, or debris, or motor bearings failing
• Samsung error code 5E — check filter, drain hose kinks, and disposal knockout plug before blaming the pump
• Cycle completes but dirty water remains — pump impeller vanes are worn and cannot move water effectively
• Water leaks from under the dishwasher during drain — pump housing seal or drain hose connection has failed

Samsung dishwashers display error codes (HE, 5E, 4E, OE, LE) that narrow the diagnosis. Check the display before opening any panels.

Samsung Part Identification

OEM part number: DD31-00005A — Samsung uses the DA/DC/DD/DG/DE prefix system where the first two letters identify the appliance division (DA = refrigerator, DC = washer/dryer, DD = dishwasher, DG = range/oven, DE = microwave). Find your model number (DW series) on the rating plate bottom of the tub and verify the exact part at samsung.com/us/support/. Samsung frequently revises parts across production runs — always cross-reference with your specific model number rather than relying on a generic part number.

Where to find your model number: Open the door and check the rating plate on the inside edge of the door or on the tub side wall. Model numbers start with DW.

Cost Breakdown

Both OEM and aftermarket options are available. OEM ensures correct fit and Samsung diagnostic compatibility.

Step-by-Step Replacement

Turn off breaker and water supply. Remove kickplate panel (2 Phillips screws each side). Pump is at bottom of tub.

1. Turn off breaker and water supply. Place towels under the door.
2. Remove the kickplate panel (2 Phillips screws each side or plastic clips).
3. The drain pump is at the tub bottom, accessible from underneath. You may need to tilt the unit slightly backward.
4. Disconnect the pump wire harness (2-pin) and the drain hose from the pump outlet.
5. Samsung pumps twist-lock to the sump housing — turn counter-clockwise quarter turn and pull free.
6. Clean the sump housing opening of debris and glass shards.
7. Install new pump (DD31-00005A) by inserting and twisting clockwise until locked.
8. Reconnect drain hose and wire harness. Restore water and power. Run a short cycle and check for leaks.

Safety note: If you encounter unexpected resistance or signs of electrical damage (melting, burning), stop and call a professional.

Tools Required

• Phillips #2 screwdriver — for kickplate
• Towels and pan — for residual water
• Pliers — for drain hose spring clamps
• Multimeter — test pump motor (5-30 ohms). OL = open winding
• Flashlight — inspect sump for debris

Samsung-Specific Tips and Common Mistakes

• Samsung dishwashers use a separate drain pump, not a reversing wash motor. If washing works fine but draining does not, the drain pump is the suspect.
• The most common cause of Samsung 5E errors is NOT the pump — it is a clogged filter trap or kinked drain hose. Clean the filter and check the hose first.
• If you recently installed a garbage disposal, ensure the knockout plug inside the disposal drain port was removed — this commonly blocks dishwasher drainage.

DIY or Professional?

This is a moderate repair. Accessing the pump requires removing the kickplate and possibly tilting the dishwasher. The pump twist-locks in and out. The tight space underneath is the main challenge.

Consider calling a professional if:

• Dishwasher is built into cabinetry with a stone countertop and cannot be tilted
• Sump housing is cracked and also needs replacement
• Glass shards found in sump — wash pump impeller may also be damaged

What Happens If You Delay This Repair

A non-functional drain pump leaves dishes sitting in dirty water. The washer cannot proceed to the next cycle phase. Standing water breeds bacteria and causes odor.

How Long Does a Samsung Dishwasher Drain Pump Last?

A typical Samsung dishwasher drain pump lasts 7-10 years under normal residential use. Samsung's build quality and smart diagnostics help you catch declining performance before complete failure — set up SmartThings notifications if your model supports it.

Factors That Shorten Drain Pump Life

• Foreign objects — glass, bones, toothpicks damage the impeller
• Hard water — mineral deposits reduce pumping efficiency
• Not pre-rinsing — heavy food debris overloads the filter and reaches the pump
• Detergent pod wrappers — undissolved wrappers jam the impeller

Maintenance Tips to Extend Drain Pump Life

• Clean the filter trap at the tub floor every 1-2 weeks
• Scrape plates before loading — large debris damages the pump
• Run monthly citric acid or cleaner cycle to dissolve mineral buildup
• Check drain hose annually for kinks that increase pump backpressure

FAQ

How much does it cost to replace a Samsung dishwasher drain pump?

OEM part costs $40-$110. Professional installation adds $90-$180, totaling $130-$290.

Can I replace the drain pump in my Samsung dishwasher myself?

Accessing the pump requires removing the kickplate and possibly tilting the dishwasher. The pump twist-locks in and out. The tight space underneath is the main challenge.

How long does a Samsung dishwasher drain pump last?

Typical lifespan is 7-10 years under normal residential use. Regular maintenance and proper use are the biggest factors in reaching that lifespan. Samsung appliances with SmartThings can proactively alert you to declining component performance before complete failure occurs.

What Samsung part number do I need for my dishwasher drain pump?

The primary OEM number is DD31-00005A. Samsung uses the DA/DC/DD/DG/DE prefix system — the first two letters identify the appliance division. Always verify against your specific model number (DW series) at samsung.com/us/support/, as Samsung frequently revises parts across production runs. Using the wrong part can cause fit issues or void warranty coverage.

Is it worth repairing my Samsung dishwasher or should I replace it?

If your Samsung dishwasher is under 8 years old and the drain pump is the only issue, the repair at $130-$290 is typically worthwhile. If the unit is over 10-12 years old or has multiple failing components, compare the total repair cost against a new Samsung dishwasher and choose accordingly.

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