Bosch dishwasher won't drain
Common reasons your Bosch dishwasher won't drain
The most common reasons your Bosch dishwasher won't drain are a failed drain pump, faulty pump and motor assembly or a cracked drain hose.
31% of the time it's the
Drain Pump
25% of the time it's the
Pump and Motor Assembly
15% of the time it's the
Drain Hose
29% of the time it's the
Something else
Most common repairs needed to fix a Bosch dishwasher
Drain Pump Replacement
A dishwasher that won’t drain often has a failed drain pump. The drain pump motor could be bad or the drain pump impeller could be damaged. The drain pump may make a loud noise when the impeller is damaged. The motor may make a loud buzzing noise or not make any noise at all if it isn’t spinning the impeller during the drain portion of the dishwashing cycle. The drain pump is hard to access so you’ll need to have a Sears Home Services Technician check out the drain pump and replace it if it isn’t working.
Pump and Motor Assembly Replacement
When the dishwasher won't drain, the pump and motor assembly that drains the water is often faulty. The motor spins a pump impeller and the impeller that moves the water through the drain hose could be damaged. A faulty motor could also be failing to spin the impeller properly. You'll likely hear a grinding or whining noise when those failures are happening. Have a Sears Home Services Technician repair the dishwasher when a faulty pump isn’t draining the water properly.
Drain Hose Replacement
If your dishwasher isn't draining properly, a blocked or damaged drain hose may be the culprit. The drain hose links to the drain pump and directs wastewater to the sink drain. Equipped with a check valve, the hose prevents drain water from flowing back into the dishwasher once the drain cycle is complete. However, if the hose or check valve is cracked, water may flow back into the tub when the drain pump ceases operation. Since accessing the drain hose is challenging, it's best to enlist the help of a Sears Home Services Repair Expert to address any cracks or damages.
What to expect when you experience a Bosch dishwasher won't drain issue
How is the won't drain problem fixed?
Correcting most won't drain problems usually involves replacing the drain pump, pump and motor assembly or drain hose. However, there are many potential causes, so a thorough diagnosis is key to fixing the problem. An accurate diagnosis is essential to understanding how much the repair will be.
Sears Home Services recommendations for a dishwasher that won't drain
When the dishwasher won't drain it can be for many reasons. To avoid replacing unneeded parts we recommend having a Sears Home Services professional perform diagnostic tests to identify the root cause of the problem. Our technicians are experienced at diagnosing all types of dishwasher failures.
What to look out for with a dishwasher won't drain diagnosis
Diagnosing modern appliances without proper knowledge and training can be difficult. Without using proper diagnostic techniques, fixing your dishwasher problem will only be achieved through changing parts on a hunch. Appliances, especially in the last 10 years, have become extremely advanced, and many models have electronic parts that are difficult to test. DIY repairs on the latest appliance models are becoming increasingly difficult.
Troubleshooting a Bosch Dishwasher that is Not Draining
Fixing a Bosch dishwasher that is not draining begins with checking the sink drain. Make sure the sink drain isn’t clogged and that the garbage disposal isn’t filled with food. Run the garbage disposal and clear the drain path through the sink drain if that’s is what is preventing the dishwasher from draining.
Check the air gap for a clog if your Bosch dishwasher is not draining and it has an air gap on the kitchen sink to prevent drain water from backing up into the dishwasher. Clear the clog in the air gap if drain water doesn’t flow freely through that device.
If these basic troubleshooting steps don’t help your Bosch dishwasher that is not draining, schedule dishwasher repair service and we’ll send a Sears Home Services technician to diagnose and repair the problem.
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Thorough
James called to give an estimated arrival time. He was professional and personable. He had 2 professional ideas of the problem and found 1 was correct, but he didn't stop there. He did a thorough check of the appliance. 1 small part was needed. He ordered the part to my house. Fortunately, he was able to schedule for the next week, just before Thanksgiving. As before, he called ahead, arrived and quickly fixed the problem. My appliance is working perfectly.
Kirsten A, Oxford, PA
Service Call
Luke was great. Polite and knowledgeable even though the dishwasher was older than he!
James G, Hillsboro, MO
Daniel
Daniel went above and beyond to fix my dish washer. Very pleasant to deal with.
Paul F, Hghlnds Ranch, CO
Repair Dishwasher Resources
Learn how a rinse aid dispenser works in a dishwasher and how to troubleshoot problems.
Learn how an air gap works in the drain system of a dishwasher.
Learn how a portable dishwasher works.
Learn how a recirculation pump works in a dishwasher and how to troubleshoot pump problems.
Glossary Terms
Hard water is water that contains high levels of dissolved minerals, particularly calcium and magnesium. It contrasts with soft water, which has lower concentrations of these minerals.
A French-door refrigerator features two doors that open side-by-side on the top section for the refrigerator compartment, with a bottom freezer drawer, combining style, efficiency, and easy access to both refrigerated and frozen goods.
A furnace is a major appliance that heats air distributed throughout a home or building via a ductwork system.
A furnace blower motor is a crucial component of a home heating system that drives the fan responsible for circulating air throughout the HVAC system and into the living spaces of the home.
Additional possible Bosch dishwasher symptoms you may experience
- Bosch dishwasher won't turn off
- Bosch dishwasher won't start cycle
- Bosch dishwasher water at bottom
- Bosch dishwasher rinse aid leaking
- Bosch dishwasher not working
- Bosch dishwasher not washing
- Bosch dishwasher not turning on
- Bosch dishwasher not starting
- Bosch dishwasher not spinning
- Bosch dishwasher not rinsing properly
- Bosch dishwasher not pumping out water
- Bosch dishwasher not powering on
- Bosch dishwasher not heating
- Bosch dishwasher not getting water
- Bosch dishwasher not filling
- Bosch dishwasher not drying
- Bosch dishwasher not draining
- Bosch dishwasher noisy
- Bosch dishwasher no water
- Bosch dishwasher no power
- Bosch dishwasher no heat
- Bosch dishwasher leaking from bottom
- Bosch dishwasher leaking
- Bosch dishwasher door not closing
- Bosch dishwasher display not working
- Bosch dishwasher dispenser not working
- Bosch dishwasher burning smell
These dishwasher brands may also experience won't drain
- Whirlpool dishwasher won't drain
- Tappan dishwasher won't drain
- Samsung dishwasher won't drain
- Maytag dishwasher won't drain
- LG dishwasher won't drain
- KitchenAid dishwasher won't drain
- Kenmore Elite dishwasher won't drain
- Kenmore dishwasher won't drain
- Hotpoint dishwasher won't drain
- GE Profile dishwasher won't drain
- GE dishwasher won't drain
- Frigidaire dishwasher won't drain
- Amana dishwasher won't drain