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Customer Questions and Answers for Dishwasher Drain Pump by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18030774
Manufacturer Part Number: WP661658

The Dishwasher Drain Pump is an OEM part for Whirlpool dishwashers. It is responsible for removing water from the dishwasher at the end of each cycle, ensuring that dishes are properly cleaned and dried.

Causes of a bad drain pump can include wear and tear from regular use, blockages from debris, or electrical malfunctions.  

Symptoms of a bad drain pump include:

  • Water not draining from the dishwasher
  • Unusual noises during the drain cycle
  • Error codes related to drainage issues
  • Water pooling at the bottom of the dishwasher

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

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Questions & Answers

For Whirlpool Dishwasher Drain Pump (Part Number: OEM18030774)

1 Answer

Michael, You will want to check to make sure that the pump is getting power to it. If the pump is not getting power to it when you press cancel then the issue would be a bad control board. If the pump is getting power to it then the drain pump WP661658 would be the issue.

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1 Answer

Gary, With the unit pumping water when hitting cancel but not when the unit goes into the drain at the end of the cycle would be caused by the control board. The part number needed would be WP8564543.

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1 Answer

Hello Konrad, I'm sorry but we cannot pull the correct part number without the model number from the unit in question. Thank you for your patience and understanding in this matter.

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1 Answer

Hello Clare. Sorry, we do not have a video at this time. We are working daily at adding new videos to our website.

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1 Answer

Angela, If the drain pump is working and sounds good then it would not be necessary to replace the drain pump.

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1 Answer

Hello JW. Make sure your not using to much soap and causing suds inside the unit. If not, then it sounds like the door gasket W11196317 will need to be replaced.

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1 Answer

Hello Trod. The drain pump can be changed without removing it from the cabinet, but is a lot easier to do if the unit is removed and laid on it's back. Also, you may not get it installed properly in the cabinet and have leaks.

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Bob for Model Number DU1145XTPB3

My questions are, in the video it gave explicit details on the wiring connections to the drain pump. At the time I had removed those wires, I forgot what placement the wires were in. One wire is grey and the other is blue/ black striped. I also had wires disconnected for a sensor that goes between the drain hose and the drain pump. Yep, forgot those too. They were a white wire and a pink/ brown wire, but there was no indication or marker on the part to determine which goes to what. Finally, The previous owners did a heck of a job when they installed the DW. They placed the direct line cable in a fashion that you couldn't take the washer all the way out, so not knowing this when I tried leveraging the washer out I may have yanked on the cable to the point where it is kinda loosey goosey as it goes into the box underneath where the wire connectors are. So if there is someone there that is knowledgeable about these issues so I don't burn my kitchen down, it would greatly help. Thanks in advance.

1 Answer

Bob, Neither the drain pump or the thermistor are polarity sensitive, so wire location isn't a priority, just make sure the connections are tight on the terminals. The electrical conduit, should be attached to the junction box by a nut, it has notches molded into the outer portion of the nut. You'll need to remove power then remove the junction box cover to access it. Quite often, they are left loose, but can be tightened easily. Turn the nut clockwise until tight against the housing, then add a 1/4 turn using a screwdriver or needle nose pliers. Then make sure the wiring connections and wire nuts are clean and tight. Then reinstall the cover.

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1 Answer

Hello Dale, You should run the diagnostic cycle with your test meter connected at the pump connection and see if the voltage is being sent to it. If not, check the harness for an open and the control for the proper output. The diagnostic cycle is covered on the tech sheet which should be located in a plastic bag affixed to the inside of the kick panel. To start the Service Diagnostics Cycle, press the following keys, in order, in less than 6 seconds, while in standby: Heated Dry, Normal, Heated Dry, Normal. Write down the fault codes and look them up on the tech sheet or let us know and we can look them up for you. Of course the most probable cause of the issue is the chopper assembly W10083957V.

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1 Answer

Hello Bill. This is the factory replacement part and should work fine in the unit according to the manufacturer.

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