Google identifies slow blinking yellow on Nest Wifi Pro as a network error or lost WAN connectivity.
What Slow blinking yellow means
Google identifies slow blinking yellow on Nest Wifi Pro as a network error or lost WAN connectivity.
What you may notice
- The display or status light shows Slow blinking yellow
- Internet access is unavailable or intermittent
- An amber, yellow, or orange light appears
- Connected devices may lose service
Most likely causes
- 01The modem or upstream service is offline
- 02An Ethernet cable is loose
- 03WAN connectivity was lost
- 04The router is still starting or updating
- 05The router or power supply has failed
Safe checks, in order
Start with the simplest non-invasive check. Stop as soon as the error clears; repeated resets can hide a condition without correcting it.
Identify the light precisely
Note its color, whether it is solid or blinking, and which icon it belongs to.
Check cables and outage status
Seat the WAN cable and confirm the modem or provider service is online.
Restart in order
When no update is running, restart the modem first and the router second.
Avoid an early reset
A factory reset erases settings and is not the first response to an outage.
Know where to stop
Do not unplug networking equipment during a firmware update. Replace a damaged or unusually hot power adapter.
When to call a technician or support
Contact the internet provider for an upstream outage or the manufacturer if the fault light remains with a known-good connection.
When you call, have the exact product model, the complete code or light pattern, and when it appeared.
Where this information came from
We use the manufacturer's current published guidance as the starting point, then organize it into a safer, beginner-friendly sequence.
Google Home Help — Wifi device light meanings Source last checked August 18, 2026. Manufacturer instructions and model manuals take priority over this independent summary.