ASUS Router Error Code 15: How to Fix It
Easy 15-30 minutes Medium Severity
Verified June 2026
- Error Code
- 15
- Brand
- ASUS Router
- Product Type
- networking
- Severity
- Medium
- DIY Difficulty
- Easy
- Estimated Fix Time
- 15-30 minutes
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Tools You'll Need
- Computer or smartphone with web browser
How to Fix Error Code 15
-
Update Router Firmware
Do not power off the router during firmware upgrade. -
Change 6GHz Channel and Bandwidth
-
Enable DFS Channels Manually
-
Disable 6GHz Temporarily
-
Perform a Factory Reset
A factory reset erases all custom settings, including Wi-Fi passwords and port forwarding.
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When to Call a Professional
If the error persists after a factory reset and firmware update, contact ASUS support. There may be a hardware defect or regulatory limitation requiring replacement.Frequently Asked Questions
What does error code 15 mean on an ASUS router?
Error code 15 indicates interference on the 6GHz band when using Wi-Fi 7. The router detects radar signals or channel conflicts and may disable 6GHz to comply with regulations.
How do I fix error 15 on my ASUS router?
Update the router firmware, change the 6GHz channel, enable DFS channels, disable 6GHz temporarily, or perform a factory reset. See the steps above for details.
Can I still use Wi-Fi 7 if I get error 15?
Yes, but you may need to reduce channel bandwidth or change channels. If the error persists, disable 6GHz and use 5GHz until ASUS releases a fix.
Is error 15 dangerous?
No, it is a safety mechanism. The router detects radar signals and avoids interference to comply with FCC or local regulations.
Do I need to replace my router if I get error 15?
Not necessarily. Most cases are resolved with firmware updates or channel changes. If the error continues after troubleshooting, contact ASUS support.