Freestyle Libre 14 day - Blood Glucose Error Messages; Error Codes E-1 to E-4

Blood Glucose Error Messages
Error
Message
What It May Mean What To Do
E-1
The temperature is
too hot or too cold
for the Reader to
work correctly.
1. Move the Reader and test
strips to a location where the
temperature is within the test
strip operating range. (See
test strip instructions for use
for the appropriate range).
2. Wait for the Reader and test
strips to adjust to the new
temperature.
3. Repeat the test using a new
test strip.
4. If the error reappears, contact
Customer Service.
E-2
Reader error. 1. Turn o the Reader.
2. Repeat the test using a new
test strip.
3. If the error reappears, contact
Customer Service.
93