Routers & Networking Error Codes
Understand router, modem, and mesh system error codes and alerts. Clear fixes for connectivity issues.
Routers, modems, and mesh networking systems are the backbone of your home or office internet connection. When these devices encounter problems, they may display error codes on their admin interface, companion apps, or through LED indicator patterns. This section helps you understand and resolve networking error codes from all major brands. Each guide explains the error's meaning, common causes such as ISP issues or configuration problems, step-by-step troubleshooting, and when to contact your internet service provider.
Common Brands
Common Error Code Formats
DNS_PROBE_FINISHEDERR_CONNECTIONDHCP ErrorWAN DisconnectedMoCA ErrorError Code Guides (20)
Verizon Router WAN Light Red – Meaning, Causes & Fix
Verizon · Router · WAN Light Red
AT&T Gateway Broadband Blinking Green – Meaning, Causes & Fix
AT&T · Gateway · Broadband Blinking Green
Arris Modem US/DS Light Blinking – Meaning, Causes & Fix
Arris · Modem · US/DS Blinking
Spectrum Router Blinking White and Blue – Meaning, Causes & Fix
Spectrum · Router · Blinking White and Blue
TP-Link Router Blinking Green Light – Meaning, Causes & Fix
TP-Link · Router · Blinking Green Light
Xfinity Router Flashing Orange Light – Meaning, Causes & Fix
Xfinity · Router · Flashing Orange Light
Netgear Router Internet Light Red – Meaning, Causes & Fix
Netgear · Router · Red Internet Light
Spectrum Modem Online Light Blinking White – Meaning, Causes & Fix
Spectrum · Modem / Router · Online Light Blinking White
Verizon Fios Router Yellow Light – Meaning, Causes & Fix
Verizon · Router · Yellow Light
AT&T Router Broadband Light Red – Meaning, Causes & Fix
AT&T · Router / Gateway · Broadband Light Red
Arris Modem DS Light Blinking – Meaning, Causes & Fix
Arris · Modem · DS Light Blinking
Netgear Router Blinking White Light – Meaning, Causes & Fix
Netgear · Router · Blinking White Light
Xfinity Router Solid Red Light – Meaning, Causes & Fix
Xfinity · Router / Gateway · Solid Red Light
TP-Link Router Orange Light – Meaning, Causes & Fix
TP-Link · Router · Orange Light
Roku Error Code 009 Explained – Meaning, Causes & Fix
Roku · Streaming Device · 009
TP-Link Router Red Light – Meaning, Causes & Fixes
TP-Link · Router · Red Light
Netgear Router Orange Light – Meaning, Causes & Fixes
Netgear · Router · Orange Light
Xfinity Router Blinking Blue Light – Meaning, Causes & Fixes
Xfinity · Router / Gateway · Blinking Blue Light
Spectrum Router Red Light – Meaning, Causes & Fixes
Spectrum · Router · Red Light
Arris Modem Online Light Blinking – Meaning, Causes & Fix
Arris · Modem · Online Light Blinking
Frequently Asked Questions
What do the blinking lights on my router mean?
Each LED on your router represents a different function (power, internet, Wi-Fi, Ethernet). Steady lights usually indicate normal operation, while rapid blinking or specific color changes can indicate errors. Check your router's manual for the exact meaning.
Why does my router keep losing connection?
Frequent disconnections can be caused by overheating, outdated firmware, interference from other devices, ISP issues, or a failing router. Start by updating firmware and checking for interference.
Should I restart my router when I see an error?
Yes, a power cycle (unplug for 30 seconds, then reconnect) resolves many temporary networking errors. If the issue persists, check the specific error code for targeted troubleshooting.