Troubleshooting Guide for Neff Dishwasher Fault Code E15
Seeing the fault code E15 on your Neff dishwasher? Don’t worry, you’re not alone. This error indicates that your dishwasher’s safety system has been activated due to water collecting in the base of the machine. Essentially, it’s a water leakage issue. But the good news? You can often fix it yourself! Here’s a simple step-by-step guide to troubleshoot and potentially resolve the issue.
What Does Fault Code E15 Mean?
When fault code E15 appears, it typically points to one of the following:
- Water has leaked into the base of the dishwasher.
- The appliance’s float switch has been activated, triggering the error.
The E15 code is Neff’s way of protecting your kitchen from leaks (thank you, dishwasher!), but before you call in the pros, try the steps below.

Things You’ll Need
- A couple of towels
- A screwdriver (for some cases)
- A little patience!
Step 1: Turn Off the Dishwasher
Safety first! Start by:
- Turning off the power supply to your dishwasher.
- Unplugging the appliance from the wall socket.
Step 2: Check for Water Leaks
Lay some towels under the dishwasher and gently pull it out from its slot (if built-in). Inspect the area around it:
- Look for visible water puddles under and behind the dishwasher.
- Check the hoses and seals for leaks or damage.
Step 3: Drain the Water in the Base
When the E15 code appears, it likely means there’s water in the base that needs to be cleared:
- Remove the dishwasher kickplate (you might need a screwdriver for this).
- Use towels or a sponge to absorb any water collected in the base tray.
- You can tilt the dishwasher slightly backward to drain excess water, but be cautious when doing this.
Once drained, inspect the float mechanism (a small foam or plastic piece that sits in the base). Ensure that it moves freely and hasn’t been stuck in the “up” position due to residual water.
Step 4: Address Potential Causes
After draining the water, check for potential reasons why it leaked in the first place:
- Inspect the door seal/gasket for tears or buildup of debris.
- Check the filter for clogs it may lead to overflowing.
- Make sure the water inlet and drain hoses are securely connected and undamaged.
Step 5: Restart the Dishwasher
Once you’ve resolved the issue and dried everything out, reconnect the dishwasher, turn the power back on, and run a short cycle to test it. If the fault code no longer appears, you’re good to go!

When to Call a Professional
If:
- The E15 code reappears after troubleshooting.
- You can’t identify the leak or source of the issue.
- You encounter damaged parts or internal components.
It’s time to call a Neff service technician for a deeper inspection.
Tips to Prevent Future E15 Errors
- Regularly clean the filter and remove food debris.
- Check the door seal for cracks or dirt buildup.
- Avoid overloading the dishwasher, as this could strain seals and cause leaks.
- Inspect hoses and connections occasionally for wear and tear.
By following these steps, you’ll save time, money, and the potential headache of a flooded kitchen. Dishwasher problems can be a nuisance, but with a towel and a bit of DIY effort, you’ll be back to sparkling clean dishes in no time. Happy troubleshooting!