How to clean and repair your Dishwasher Drain Hose?

When your dishwasher experiences difficulties and slowness in draining water, most likely, the drain hose is clogged. The clog may be found where the hose connects to the main house drain line or where it connects to the garbage disposal. Either way, you need to unclog it as soon as possible.

You don’t really need the help of a plumber or be a seasoned handyman for you to unclog it. Unclogging the dishwasher drain hose isn’t really difficult and will only take a few moments. However, you need to find out the correct parts of the dishwasher for you to be able to locate whatever part is written in this guide.

While it is not 100% sure that you’ll be able to entirely solve the problem, trying to fix the problem yourself is worth it before shelling some precious dollars on a dishwasher repairman.


What is the step-by-step procedure of cleaning and repairing dishwasher drain hose?

To guide you in cleaning and repairing your dishwasher drain hose, we have made the following procedure:

Step 1: Determine the type of dishwasher you have to know the right way of disassembling it. There are different ways of pulling apart the dishwasher and it depends on the structure of the dishwasher. Every manufacturer has their own way of structuring their products. You can find this in the manual that comes with it.

Also, remember if the clog happened right after your installed the garbage disposal recently. If yes, the clog may be caused by not taking off the knockout plug. Simply remove it and the clog is gone. If not, go to the next step.

Step 2: Find access to the hose. You might unscrew some covers for you to find its right location. Usually it is found behind a kickplate panel located at the bottom of the dishwasher and you can access it by removing the screws.

Step 3: Remove the drain hose that connects the pump from the sink. Don’t forget to place something underneath the point of the hose that you’ll be taking off in case of spills. Use pliers to remove the wire clamp.

Step 4: Shake the drain hose on top of the sink, garbage can, or palm to dislodge debris that may be stuck somewhere inside the hose. You can also run water into one end of the hose and out on the other end to wash away any remaining debris or dirt. It is recommended to use a garden hose or any faucet that lets water run with strong force. The pressure will help at dislodging the remaining obstacles.

It helps if you have a drain hose that is white with good enough transparency so you can easily pinpoint the spot where the clog is, to give you an idea of drain hoses with this color, check out:


LASCO 16-1904 Dishwasher Flexible Poly Drain Hose

LASCO 16-1904 Dishwasher Drain Hose, Corrugated Flexible Poly Tubing, 5/8 ID x 7/8 OD, Universal Stepped Ends, 78-Inches Long
  • Poly flex hose material snakes under cabinets from dishwasher to sink drain
  • Stepped size on connection ends: to fit 1-inch, 7/8-inch, 5/8-inch or 3/4-inch fittings
  • Includes 2 stainless steel hose clamps


Step 5: If you fill the drain hose with strong water force and nothing or very little water passes through the other no matter how strong the water pressure or how hard you shake it, the obstruction may be irremovable. You can try poking it with a stick or something, but if you get up to that extent, it sounds like you have to replace the drain hose.

If this is the case, you can buy replacements easily, such as the:


LG Electronics AEM69493803 Dishwasher Drain Hose Assembly

LG Electronics AEM69493803 Dishwasher Drain Hose Assembly
  • LG AEM69493803 Dishwasher Drain Hose Assembly
  • Black rubber hose goes to the top of the water inlet housing on the side of the dishwasher
  • You may need to order item #1267810 as well


Step 6: If you have successfully removed the clog from the drain hose or you have bought a new one, it is time reconnect/connect the hose into the dishwasher. Place the wire clamps securely so that no water would leak out.

Step 7: Run the dishwasher to check that everything is working and the dishwasher drain hose works in tip-top shape again. If you find that there’s still clogging yet the drain hose is working effectively, there may be other reasons why.

Key Takeaway: Dirt and debris stuck in the drain hose are the major reasons why there is clogging. You can easily solve it by locating the drain hose, removing the debris, and putting it back to the dishwasher. If it can’t be solved, you can always purchase new dishwasher drain hose that won’t cost you over $20.

If you’re on a budget, check out:


Frigidaire 154753201 Hose for Dish Washer

GENUINE Frigidaire 154753201 Hose for Dish Washer
  • Works with models: Frigidaire BBBD2432KB
  • Frigidaire BBBD2432KF
  • Frigidaire BBBD2432KW


Why is the dishwasher not draining properly?

If you have tried replacing the dishwasher drain hose using the tutorial above, there might be other reasons why it’s not draining properly. These are:

  1. Obstructed Drain Valve – While checking the drain hose (see above), you can also check the drain valve, as it might be the one that is clogged, and not the hose.
  2. Broken Drain Pump – If the drain hose and the drain valve are perfectly fine, it might be the drain pump. Check if there is wear and tear and also give it some scrubbing and cleaning. Replacing this one may cost about $40 – $50
  3. Obstructed Air Gap – If you have an air gap installed, check the tubes connected to it to see if there is any debris dislodged in it.
  4. Obstructed Filter – There might be big debris and dirt stuck in it. If so, go ahead and clean it to help alleviate the clog.

Key Takeaway: If all of the above parts are working or you have replaced the ones thought to be faulty, the reason of the clog may be beyond cleaning or repairing. You may need to seek the help of a plumber or call the manufacturer of the company to help you with troubleshooting. After all, they know their product better than you do.



The dishwasher drain hose is one of the most important parts of the appliance as it is the route of the dirty water after it has done cleaning and washing your plates, pots, pans, and utensils. Sometimes, debris, grime, and dirt may cause a build-up in the drain hose, causing major clogs in the area, especially if grease has stuck into the walls of the drain hose.

Because the dishwasher drain hose can be easily accessed, you can clean and repair the dishwasher drain hose yourself or replace it when necessary.