Freestyle Libre 14 day User Manual page 96

Display
Scan Error
Sensor Error
91
What It May Mean
The Reader
was unable to
communicate with
the Sensor .
The System is
unable to provide a
glucose reading .
What To Do
Try scanning again .
Note: You may need to move
away from potential sources of
electromagnetic interference .
Scan again after the duration
specified in the message .
Note: If you receive this error
during your first 12 hours of
wearing a Sensor, it may mean
that your body is still adjusting
to the Sensor . Use a blood
glucose meter to check your
glucose while you wait . You
do not need to remove your
Sensor .