Dishwashers can be a great convenience—they save you time and energy, and they’re especially useful for cleaning dishes. However, if your dishwasher isn’t draining properly, it will waste water and time. Though there are a variety of reasons why a dishwasher won’t drain, the problem is frequently resolved with a few simple troubleshooting procedures. Learn what to do if your dishwasher won’t drain and how to keep it draining properly in the future.

Dishwasher Does Not Drain

Examine for a Clog

Check for obstructions in the sump (at the back of the dishwasher) or the tub’s bottom. Remove any standing water that exceeds two to three glasses. Look for and remove food particles, paper, and other rubbish to unclog a dishwasher. It’s usual for some dishwashers to leave a tiny bit of water at the bottom of the tub after a full cycle. Consult your owner’s manual to confirm.

Clear the Trash From the Filter

The filter is at the dishwasher’s bottom. It should be placed towards the lower spray arm’s base or at the tub’s back. Even though most dishwashers have built-in food and paper grinders, detritus can still clog the filter. Remove any debris.

Examine the Drain Hose

The drain hose is a corrugated construction that is situated just beneath the sink, between the drain pump and the drain line. If the drain hose has any kinks, gently straighten them out. To clear obstructions in the drain hose, you may need to remove it from its current position. Unscrew the clamps that connect the drainpipe to the disposal. If there is a clog, blow through one end of the hose to clear it.

Check Dishwasher Door Latch Is Closed

Your dishwasher will not drain completely if the door is left unlatched. Close the dishwasher door and run a full cycle to check if it drains. If you’re having difficulties locking the door, you might need to replace the latch.

Remove the Air Gap

The air gap is the small chrome cylinder on the kitchen sink’s back. When using the dishwasher, check for leaks from the air gap. If so, there is a blockage between the air gap and the trash disposer. Remove the air gap top and clean the inside with a baking soda and water mixture.

Motor Check

Assemble the dishwasher and plug it in to test the motor. The dishwasher should hum when turned on. A hum indicates a motor getting power but not turning. If so, a new motor is required.

Examine the Drain

During the wash cycle, a drain valve opens the solenoid (an electromagnet) and lets water drain. To test the valve, gently push on the valve bracket. If your dishwasher has a drain valve and it appears to be frozen, you may need to replace it.

Dishwasher Repair in Your Area

The steps outlined above can help you fix your dishwasher, but if they don’t work, it may be time to call a professional. At Sacramento Repipe & Plumbing, we are experts in the field of dishwasher repair. Our skilled plumbers are always ready to take on the most difficult of repair jobs and can have your dishwasher back in running order in no time. 


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