Bosch Dishwasher She55M12Uc/64 Not Draining

Title: Bosch Dishwasher She55M12Uc/64 Not Draining

Hey there! Have you ever experienced the frustration of a dishwasher that refuses to drain? It can be quite a headache, especially when you’re left with a sink full of dirty water and a dishwasher full of unwashed dishes. If you own a Bosch dishwasher model She55M12Uc/64 and are facing this issue, fear not! In this blog post, we’ll dive into the possible reasons why your dishwasher might not be draining and provide you with some handy solutions to get it back up and running smoothly. So, let’s roll up our sleeves and tackle this drainage problem together!

1. The Clogged Filter: A Common Culprit

When it comes to a dishwasher not draining, a clogged filter is often the prime suspect. The filter’s primary function is to trap food particles and prevent them from clogging the drain pump. Over time, the filter can become clogged itself, obstructing the drainage process. Here’s what you can do:

– Locate the filter, which is usually located at the bottom of the dishwasher.
– Remove any visible debris or food particles.
– Rinse the filter under running water to ensure it’s thoroughly clean.
– Reinstall the filter and give the dishwasher a test run to check if the drainage issue is resolved.

2. Blocked Drain Hose: Clearing the Path

Another possible reason for your Bosch dishwasher’s drainage problem is a blocked drain hose. The drain hose carries the wastewater from the dishwasher to your home’s plumbing system. If this hose gets clogged or kinked, it can impede the water flow, resulting in poor drainage. Here’s what you can do:

– Start by disconnecting the dishwasher from the power source and turning off the water supply.
– Locate the drain hose, which is usually connected to the sink’s plumbing or garbage disposal unit.
– Check for any kinks, bends, or obstructions in the hose.
– If you find a blockage, carefully remove it using a plumber’s snake or a wire coat hanger.
– Reconnect the drain hose securely and test the dishwasher to see if the drainage problem is resolved.

3. Malfunctioning Drain Pump: A Potential Culprit

If neither the filter nor the drain hose seems to be causing the drainage issue, it’s time to inspect the drain pump. The drain pump is responsible for pumping out the wastewater from your dishwasher. If it’s malfunctioning or damaged, it may not be able to effectively drain the water. Here’s what you can do:

– Before proceeding, ensure the dishwasher is disconnected from the power source and the water supply is turned off.
– Locate the drain pump, which is usually found at the bottom of the dishwasher.
– Check for any visible signs of damage or blockage, such as debris or foreign objects.
– If you notice any issues, you may need to replace the drain pump. Consult the user manual or contact a professional technician for assistance.

4. Air Gap Blockage: A Hidden Culprit

An often overlooked component in a dishwasher’s drainage system is the air gap. The air gap prevents wastewater from flowing back into the dishwasher and ensures proper drainage. However, if the air gap becomes clogged, it can hinder the drainage process. Here’s what you can do:

– Locate the air gap, which is usually mounted on the sink’s countertop or behind it.
– Remove the cap of the air gap and check for any debris or blockage.
– Clean the air gap thoroughly using a small brush or toothpick.
– Once cleaned, reassemble the air gap and test the dishwasher to see if the drainage problem is resolved.

5. Plumbing Issues: Beyond the Dishwasher

If you’ve exhausted all the possibilities within your dishwasher and it still refuses to drain, it’s time to consider external factors. Plumbing issues, such as a clogged sink or a faulty garbage disposal unit, can affect the dishwasher’s drainage. Here’s what you can do:

– Check the sink’s drain for any clogs or blockages. Use a plunger or a drain snake to clear them if necessary.
– If you have a garbage disposal unit, ensure it’s functioning correctly. Run it to see if it’s draining properly.
– If you suspect a plumbing issue, it’s advisable to contact a professional plumber to assess and resolve the problem.


Phew! We’ve covered quite a bit of ground in troubleshooting the drainage issue of your Bosch dishwasher She55M12Uc/64. From a clogged filter to a malfunctioning drain pump, we’ve explored the possible culprits and provided you with practical solutions. Remember, regular maintenance, such as cleaning the filter and checking the drain hose, can help prevent drainage problems in the future. If the issue persists or seems beyond your expertise, don’t hesitate to seek professional assistance. Now, go ahead, fix that drainage problem, and let your Bosch dishwasher work its magic once again!