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E15
NEFF Dishwasher
Urgency
⚡ Medium
Attend to soon
Repair difficulty
✓ DIY Friendly
No specialist needed
Diagnosis
What this error means
Anti-flood protection system has been activated
E15 on a Neff dishwasher is identical in cause and fix to the Bosch and Siemens E15 — all three brands are part of the BSH Group and share the same platforms. Water has collected in the machine's base tray and raised the flood protection float switch.
Also known as: Same as Siemens and Bosch E15
For information purposes only.
Always consult a qualified engineer before attempting repairs.
🔌 Unplug your appliance before any inspection or repair.
First steps
Fix time
10 - 15 Minutes
Difficulty
Anyone
Appliance
Dishwasher
What you'll need first
☐
Sponges →
· Amazon
☐
Torx Screwdriver Set →
· Amazon
Affiliate links — we may earn a small commission at no extra cost to you.
Step-by-step
1
Turn off and unplug the dishwasher
Never work on an appliance that is connected to the power supply
2
Carefully pull the machine out
The machine may be heavy so assistance may be required
3
Gently tilt it backward (around 30–45°)
4
Allow any trapped water to drain out onto a towel
5
Return upright and restart the machine
Diagnostic
Symptoms to look for
- Dishwasher continuously running the drain pump
- Loud humming noise, even when not in use
- Flashing tap symbol on the display
- Machine won’t start or complete a cycle
- Water leaking or previously leaked from the unit
Step-by-step repair guide
Diagnostic steps
Tilt and Drain (If you have not already done so)
Unplug the appliance and tilt it slightly backward to allow water in the base tray to drain out.
Have towels ready to catch the water!
Dry the Base Tray
If you can’t tilt the machine: Remove the lower front panel (kickplate) Use a towel or hairdryer (cool setting) to dry the base
Bosch, Siemens & Neff usually use Torx screws on their machines not standard screws.
Check for Leaks
Once reset, run a short cycle and inspect for: Water escaping from hoses Leaks around the door seal Drips underneath the machine
Fix the Root Cause
If the error returns, you may need to replace the door seal, tighten or replace hoses or replace the sump seal
If in any doubt with any repair call a qualified professional
Escalation
When to call an engineer
- The E15 error keeps returning after drying the machine
- You can see an active leak but can’t locate the source
- The dishwasher is still pumping constantly after reset
- There are signs of worn seals or damaged hoses
- You suspect a sump seal failure or internal leak
- You’re unable to safely access internal components
Common questions
Frequently asked questions
How do I reset the E15 error
Once the water is removed, the error should clear automatically.
If it doesn’t:
Hold the Start button for 3–5 seconds
Unplug the machine for 10 minutes to reset the system
If it doesn’t:
Hold the Start button for 3–5 seconds
Unplug the machine for 10 minutes to reset the system
Why is my dishwasher humming even when it’s off?
The drain pump is running continuously to remove water from the base tray and prevent flooding.
Can I still use the dishwasher with an E15 error?
No — the machine will not operate until the water is removed and the safety system resets.
What is the most common cause of E15?
The most common cause is oversudsing from too much detergent or a minor internal leak.
How do I prevent the E15 error?
Use the correct amount of detergent
Clean and inspect door seals regularly
Ensure the dishwasher is level
Check hoses periodically for wear
Clean and inspect door seals regularly
Ensure the dishwasher is level
Check hoses periodically for wear
This video shows the steps involved to diagnose and fix the E15 Error. Bosch shares a platform with Siemens and Neff so the checks and solutions are the same.
Key points covered
- E15 Causes
- Seal Cleaning
- Base removal and Aquastop cleaning
🎯 What is likely causing this fault?
⚠️ Estimates based on common faults — not a guaranteed diagnosis. Always verify before ordering parts.
Parts you may need
Enter your model number to filter results to your exact machine
Usually found on a label inside the door frame or on the back panel of the machine.
○
No model entered
| Part | Approx. UK Cost | Find it |
|---|---|---|
| Door seal | £20 - £40 | 🛒 Amazon UK → |
| Door seal | £15 - £20 | 🏷️ eBay UK → |
ℹ️ Prices are approximate. Always check the part number matches your model before ordering. Not sure of your model number? Find out how to locate it here.
🇬🇧 UK — Parts & Replacements