There are several reasons why your CGM sensor may stop working or display a timeout error:
Sensor lifespan has ended – Most Freestyle Libre sensors last 14 days. If your sensor has reached the end of its life, you will need to apply a new one to continue receiving glucose readings.
Sensor was removed or dislodged – If the sensor has been knocked off, loosened, or detached, it may stop transmitting data.
Bluetooth or NFC connection issues – If using the Freestyle Libre 2, ensure Bluetooth is enabled on your phone, as the sensor sends data via Bluetooth.
Sensor was not activated properly – If your sensor was not scanned properly during setup, it may fail to start correctly.
Exposure to extreme temperatures – If your sensor has been in very hot (e.g., sauna) or very cold (e.g., ice bath) environments, it may temporarily stop working.
Electromagnetic interference – Being near strong electrical sources, such as speakers, medical devices, or large power sources, can cause data transmission issues.
2. How to Fix a Sensor Timeout Issue
If Your Sensor Has Not Reached 14 Days:
Try restarting your phone – Sometimes a simple restart can reconnect the sensor.
Ensure Bluetooth is enabled – For Freestyle Libre 2, check that Bluetooth is on and connected.
Check your scanning method – Ensure you are scanning the sensor correctly with NFC.
Move to a stable temperature – If your sensor was exposed to extreme heat or cold, let it return to room temperature and try again.
Avoid electromagnetic interference – Move away from devices that may disrupt transmission.
Wait a few minutes and try again – If the timeout is temporary, the sensor may resume transmitting.
❌ If Your Sensor Has Reached 14 Days:
The Freestyle Libre sensor automatically stops working after 14 days.
You will need to apply a new sensor to continue receiving glucose readings.
3. When to Contact Support
If your sensor still isn’t working after trying the steps above, it may be faulty.
📩 Contact Vively Support at contact@vively.com.au, and we will arrange a replacement if there is an inherent fault with the device.
Final Thoughts
A CGM sensor timing out can be frustrating, but in most cases, it is either due to expired sensors, temporary connection issues, or external factors. By following these troubleshooting steps, you can often resolve the issue quickly and get back to tracking your glucose levels effectively. 🚀