Whirlpool Dishwasher Not Draining: Causes and Fixes
Quick Answer
A Whirlpool dishwasher not draining usually indicates a clog in the filter or drain hose. To fix it, clean the drain filter at the bottom of the tub and ensure the drain hose has a high loop to prevent backflow.
Most of the time when I get a call about a Whirlpool not draining, it's been going on for a few days and the bottom already smells like a swamp. Ignore it long enough and you're looking at a rusted tub floor, a burned-out pump motor, or water on your kitchen floor. A five-minute filter cleaning can save you a $200 service call. Don't wait on this one.
Whirlpool Dishwasher Not Draining: Causes and Fixes
Here's the deal with Whirlpool dishwashers specifically: they've got a two-part filter system at the bottom that most people have literally never touched. That filter catches all the food debris that older machines used to grind up and flush out. When it's packed with gunk, water just sits there. I'd say 60% of not-draining calls I go on are just that filter needing a rinse under the faucet. The other 40% splits between a kinked drain hose, a missing knockout plug on a new garbage disposal, and an actual dead pump motor.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Drain pump filter clogged with coins, hair ties, or fabric40%
Drain hose kinked or positioned too low24%
Drain pump impeller jammed by a foreign object14%
Standpipe or disposal drain connection blocked12%
Drain pump motor winding burned out10%
Symptoms You May Notice
An inch or two of standing water sitting in the bottom of the tub when the cycle finishes.
That sour, mildewy smell hits you when you open the door because stagnant water's been sitting in the sump for hours.
Dishes on the bottom rack coming out wet, spotted, or gritty because dirty water got recirculated through the wash instead of draining out first.
You can hear the pump humming or buzzing at the end of the cycle but nothing's actually moving. That grinding or buzzing with no drainage is almost always either an impeller jam or a failing motor.
The cycle takes way longer than normal or just stops and sits there, because the control board is waiting on a drain event that never happens.
Can you reset a Whirlpool dishwasher to clear the NOT-DRAINING code?
Cut power at the breaker or unplug the machine and leave it for five full minutes, not thirty seconds. Five minutes. When power comes back, close the door and press Cancel or Drain, then start a new cycle and watch whether it drains. For a control reset, press any button three times in a row, pause, then three more times, pause, then three more times with the door closed. This runs a diagnostic sequence and often kicks off a drain cycle automatically to clear whatever's left in the tub.
Tools Required for Diagnosis
Phillips #2 screwdriverTorx T20 screwdriverMultimeterOld toothbrush or soft bottle brushShop vac or old towelsFlashlight or headlampNeedle-nose pliers
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
ComponentComponent Under Test
Expected Range8–15 ohms
ConditionIf Open (OL) or infinite, replace component.
Frequently Asked Questions
How much does it cost to fix a Whirlpool dishwasher not draining?
If you're calling a tech out, figure $100-150 for the service call and diagnosis, then parts on top of that. A Whirlpool drain pump usually runs $50-90 for the part itself. If it's just a clog or a blocked filter, a tech should have it cleared in 30 minutes flat. Control board issues are where it gets expensive, sometimes $300-400 for parts alone, and at that point I'd honestly tell you to start shopping for a new machine. But most not-draining calls are cheap fixes, seriously.
Is it worth repairing a Whirlpool dishwasher that won't drain?
Whirlpool dishwashers are built to last 10-12 years and they're solid machines. If yours is under 8 years old and it's just the drain pump or a clog, absolutely fix it. A $70 pump and an hour of your time versus $600+ for a new machine? Easy call. But if it's over 10 years old and needs a control board or a bunch of stuff at once, the math tips toward replacement. The drain pump and filter issues specifically are almost always worth fixing at any age.
Can I fix a Whirlpool dishwasher not draining myself?
Yeah, honestly most people can handle this. The filter cleaning takes zero tools and five minutes. The drain hose check is also pretty straightforward, you're just looking under the sink. Even swapping the drain pump isn't bad if you're comfortable using a multimeter and turning off breakers. You'll need a Torx T20 for the kickplate on most models, some old towels for the water, and a flashlight. Just don't force the plastic clips on the pump wire harness when you're disconnecting it. Those snap pretty easily and then you've got a bigger problem.
Why does my Whirlpool dishwasher smell bad when it's not draining?
That smell is stagnant water sitting in the sump and getting funky. Same reason a bucket of water left in a hot garage smells terrible after a week. The water has food particles in it, bacteria grows fast, and it gets rank quickly in a warm kitchen. Once you fix the drain issue, run a cycle with a dishwasher cleaner tablet or just a cup of white vinegar sitting in the bottom of the tub. That'll knock out the smell. If the smell comes back within a week, the drain problem isn't fully resolved yet.
How do I know if it's a clog or a dead pump?
Listen during the drain portion of the cycle. Total silence when it should be draining points to either the board not sending power or a completely seized motor. A hum or buzz with no water moving is usually a jammed impeller or a motor that's getting power but can't spin. And if the machine drains sometimes but not others? That's almost always a partial clog in the filter or drain hose. Intermittent problems are rarely the pump. They're almost always mechanical blockages.
How often should I clean the filter to prevent this?
Whirlpool says monthly. Realistically, if you run yours every single day, monthly is right. A few times a week, every couple months is probably fine. It takes literally five minutes. Twist out the cylindrical filter, rinse it under the faucet, scrub lightly with a soft brush if there's buildup, drop it back in. Most people who call me with a not-draining Whirlpool have never cleaned the filter once. Not once in five years of daily use. Just make it part of your routine and you'll probably never deal with this problem.
Same Fix Works on These Brands
Whirlpool shares the same hardware platform with these brands. The diagnosis and repair steps are identical.