Skip to Content
  • time delivery images 2 Day Quick Delivery!
  • box-refresh images 365 Day Return Policy!
  • lovely images 15 million satisfied customers
  • boxes images Over 2.1 Million Parts In Stock
  • headphone imagesFree Tech Support!
  • google images Google Trusted Store

Customer Questions and Answers for Circulation Pump by Bosch

Best Seller
Manufacturer Part
4.89 (64)
By: Bosch
Part Number: OEM8479161
Manufacturer Part Number: 00239144

Questions & Answers

For Bosch Circulation Pump (Part Number: OEM8479161)

Benjamin A. for Model Number shu3336uc u12

HI, I've have a problem for a few days. the dishwasher will not clean very well when the cycle is finish. I have standing water 1/2 on the grid. I can hear the pump, but the water is not going to the drain, I need to remove the water myself. if I do not, I think that the dishwasher runs with old water. When i remove the water, and run with nothing inside, the water is clear, but remains in the bottom of the dishwasher. Thanks for the help.

1 Answer

Benjamin, You're probably correct on all of the statements you made, But there are a couple of things to check before you replace any parts. You should first check the drain hose for kinks and clogs, You could disconnect the drain hose from underneath the kitchen sink, and select a drain cycle, and allow the water to drain into a bucket. This will usually flush any debris or clogs that may have developed in the drain hose. Then if all's OK, you'll need to access and remove the drain pump 00167082 and check the drain chamber for debris or damage and the vanes on the impeller are in tact. Any other issues would involve the kitchen sink drain system.

Read More...

1 Answer

Nick, You will want to check the pump assembly to make sure that there is nothing wrapped around the impeller of the pump or the shaft. Look for something like a twist tie or something similar. If there is remove and run to see if noise is still there. If there is nothing in there and the noise is present then the pump would be the issue.

Read More...
Jessica for Model Number Bosch SHE55M05UC/48

Our Bosch dishwasher is about 6 years old. Over the past few weeks, it has started making a horrible cavitating noise at the beginning of each circulation portion of the cycle. Initially, we thought there might be some kind of scale buildup and so we just ran a couple of cycles with dishwasher cleaner. That made no difference, and so we started examining the situation more thoroughly. We noticed that even though the dishes were getting clean, the water levels during the cycle (particularly during the noisy parts) were lower than we expected to see. We don't have a great baseline for what the water levels were historically, but we expected it to be above the sump screen. Generally, when we open the dishwasher during the noise, we find the water level to be at or lower than the height of the sump screen. The noise does go away if we open the dishwasher when the noise starts and add a few cups of water. This is how we've continued to clean our dishes over the last few weeks. The noise very reliably disappears the moment we add more water. Based on this, we replaced the water inlet valve thinking it must not be opening enough and causing the machine to underfill. The new water valve did not resolve the issue. Next, we pulled the dishwasher out of the cabinet to inspect the water manifold and tubing for debris. They are beautifully clear. We do have a water softener, but even so, it still surprises me just how clean the tubing is. We reconnected the water to run the dishwasher and watch the water manifold at the same time. Water definitely enters the machine, but just doesn't fill it to the level required to avoid the growling sound before the circulation pump kicks on. It continues to fill for a minute or two while the circulation pump gets going, and the majority of the time the noise goes away by the time the filling ends. Even that end level is somewhat variable though, which surprised us because we expected it to consistently fill to a point that would almost - but not quite - trigger the float. We've played with the hose to make sure there are no kinks. The only other thing that I can even think to do, but have little hope for and don't really know how good of an idea it really is, is to vacuum out the sump and each port entering/exiting the sump just in case some chunk of food is managing to stay bizarrely stuck through weeks of troubleshooting & running the machine. My question boils down to: what next? What is the normal fill level for a Bosch dishwasher? Is this fill level normally variable, and if so, by how much? What other components would impact the fill level and could potentially cause underfilling? Or should we just move over to focus on the (much more expensive) circulation pump and ignore the variable water level?

1 Answer

Jessica, If the noise is like a jumpy or chattering noise then you will want to check the water pressure coming into the unit. If the water pressure is too low it will cause the unit to have the chattering noise.

Read More...
Patrick C for Model Number SHX 33A05UC /22

I received the new circulation pump for my dishwasher but the wiring is different. The motor looks basically the same except for the wiring. My motor has wires at #1, #4, #3, ground and a blue wire going to the side thing. The new motor doesn't have a pin for #4 and there is no pin on the side thing for the blue wire. Can I get detailed installation instructions for this part? I can email a photo of the two motors side by side to show the differences. Thank you for your help Patrick

1 Answer

Patrick, It appears that you may have ordered the wrong pump assembly. The correct part number for your circulation pump is 00442548.

Read More...
Don for Model Number SHX46A06

My Bosch SHX46A06 dishwasher fills to the level of the upper holes in the filter basket. I believe this is correct. The Circulation pump starts running, but water is only coming out of the lower arm about 2". I ran cancel/drain cycle and water drained, then I vacuumed the remaining water out. Removed screw and cover over drain pump impeller and vacuumed more. The impeller turned fine. Measured circulation pump resistance of 12 ohms, starter winding resistance of around 20 ohms, and checked the starter capacitor with ohmmeter, saw resistance start out at low value (less than 100 ohms) and increase up to hundreds of k ohm. I assumed that pump and cap were good. Turned the pump by hand and it felt normal, no binding. I removed the upper and lower spray arm assemblies, cleaned them, blew air and ran water through them to assure no clogs. Then reinstalled them. Cleaned all debris out of the sump area, put impeller cover back in and started a new wash cycle. The machine started by draining for a few seconds, then it filled as I described earlier. When the circulation pump started, I observed it turning at what appeared to be a consistent and normal speed. I did NOT smell any burned winding. Measured 120VAC across circulation pump terminals and 240VAC across the starter capacitor. I have read all the posts where you recommend replacing the circulation pump. I am ready to do that but I am hoping to get some directions on how to remove it since it's not at all obvious to me. Also, given my voltage and resistance measurements and the observation of the pump spinning, I am wondering if it is possible that there is a clog at the circulation pump inlet or outlet or maybe a damaged impeller or other part within the "wet" portions of the pump. I assume that I can inspect that but am requesting instructions for how to do that as well. Lastly, when the circulation motors do fail, what is the failure mode: burned windings, worn brushes,…? When you have recommended changing the circulation pump, I haven't seen anything from folks saying that changing the pump solved their problem. Has it? Thank you very much - Don Q

1 Answer

Hello Don. It sounds like the water level is low in the unit. I would try to replace the water valve on the unit. See if the level increases and causes the pressure to increase and work properly.

Read More...

1 Answer

Hello Bryan. I would try replacing the water valve on the unit. It sounds like it is not filling properly. Also, get the water hot at the sink before starting the unit.

Read More...

1 Answer

Hello Tom. If it is filling with water, but is not circulating the water, you will need to replace the circulation pump on the unit.

Read More...

1 Answer

Hello shadetree repairman. Look for a water leak in the bottom pan on the unit. This causes the float to stay up and leave the pump on the unit.

Read More...

1 Answer

Thomas, You will want to replace the water valve. The water valve is not closing all the way and with this happening it will not allow the proper pressure and water will leak through a weep hole in the float area and will not allow water to fill and collect in the bottom.

Read More...

Have questions? Ask our pros!

Contact us in a way that is convenient for you

Call us 1-877-477-7278
Need Help? Chat with a Pro
Or ask a question by filling in the form

Share your thoughts with other customers

Ask a Question
  • boxes images Over 2.1 Million Parts In Stock
  • time delivery images 2 Day Quick Delivery!
  • box-refresh images 365 Day Return Policy!
  • headphone imagesFree Tech Support!
  • google images Google Trusted Store