Modern dishwashers are designed with advanced sensors to keep your kitchen safe and your appliance running smoothly. One of the more common issues that owners of Bosch and similar dishwashers face is error code E15. This code can be alarming at first, but understanding what it means—and how to resolve it—can save you both time and money.
In this article, we’ll cover:
- What error code E15 actually means
- The most common causes behind it
- Step-by-step troubleshooting and fixes you can try at home
- When to call a professional
What Does Dishwasher Error Code E15 Mean?
Error code E15 typically indicates a water leak detection problem. Most dishwashers that display this code are equipped with a built-in aqua stop safety system. When water leaks into the base of the dishwasher, a float switch is triggered. To protect your home from water damage, the dishwasher automatically stops working and shows E15.
In simple terms: your dishwasher thinks there is water where it shouldn’t be.
Common Causes of E15 Error Code
Several issues can trigger this warning. Below are the most common:
- Leaking Hose or Connection
- Loose or damaged water inlet hoses may drip water into the base.
- Faulty or Clogged Drain Pump
- If the drain pump is obstructed or broken, water may pool inside.
- Excess Detergent or Wrong Soap
- Using too much detergent—or the wrong type—can create excessive suds that overflow.
- Damaged Door Seal or Gasket
- A worn-out gasket can allow water to escape during a wash cycle.
- Internal Component Failure
- Cracks in the tub or issues with the heat exchanger can also lead to leaks.
How to Fix Dishwasher Error Code E15
If you see E15, don’t panic. In many cases, this is a manageable DIY fix. Follow these steps:
Step 1: Safety First

Unplug the dishwasher and turn off the water supply. Working with water and electricity together is dangerous, so ensure the appliance is fully disconnected.
Step 2: Drain the Water

Pull the dishwasher out slightly, tilt it gently backward (about 45 degrees), and let any trapped water drain out onto a towel. This may temporarily reset the float switch.
Step 3: Inspect for Visible Leaks

- Check the water inlet and drain hoses for cracks or loose connections.
- Examine the door seal for signs of wear or damage.
Step 4: Clean the Filters and Drain Pump

Remove any debris clogging the filters or pump. Blockages can cause water buildup that eventually triggers the error.
Step 5: Reset the Dishwasher

After draining and cleaning, reconnect the dishwasher and run a short cycle to see if the error clears.
When to Call a Professional
While minor leaks and clogs are easy to fix at home, some problems require professional expertise. If you notice any of the following, it’s best to leave it to the experts:
- Persistent leaks after DIY fixes
- Cracked internal components
- Electrical malfunctions
- Repeated E15 error despite resets
If you can’t resolve the issue yourself, don’t risk further damage. Contact us today and our team will fix it for you. Professional diagnosis ensures your dishwasher is safely repaired and restored to full function.
Final Thoughts
The E15 error code is your dishwasher’s way of protecting you from leaks and potential water damage. Often, the fix is as simple as draining excess water and tightening a connection. However, more serious leaks or faulty parts may require professional repair.