Understanding Your Libre2+ Sensor
Libre 2 sensor troubleshooting and tips
⚠️ This article applies only to the Libre2+ sensor. It does not apply to Libre 3 or any other models.
🔄 Connection Drops: What to Know
Occasionally, your Libre2+ sensor may lose connection. This is usually temporary and resolves on its own.
What to know:
The sensor automatically tries to reconnect.
During the disconnect, real-time data may pause temporarily.
The sensor continues collecting data in the background and stores up to 8 hours of readings.
What to do:
If the sensor doesn’t reconnect automatically, scan it manually to restore the connection and recover stored data.
⏱️ “Glucose Reading Unavailable” Message
Sometimes, you may see a “glucose reading unavailable” message. This can happen due to:
Temperature or humidity changes
Very high glucose readings
This is usually temporary and resolves within ~10 minutes.
What to do:
Do not remove the sensor immediately.
Wait 1–2 hours. If the message doesn’t clear or changes to “replace sensor,” it may be time to contact our support team.
Please wait to hear back from us before removing your sensor.
🛌 Pressure on Sensor Causing Low Readings?
If your Libre2+ sensor shows unexpected low glucose readings, it may be due to pressure on the sensor, for example, while sleeping on it.
These readings:
They are often false lows
Disappear quickly once the pressure is removed
Do not show up in your historical data
What to do:
Consider whether there was any pressure on the sensor.
Wait 10 minutes, then scan again.
If readings return to normal, there’s no need to contact support or replace the sensor.
❓ Still Have Questions?
We’re here to help! If you're unsure whether an issue requires a replacement, feel free to reach out to our support team via the in-app chat, or check out this article for other ways to contact us and view our opening hours.