Accu-Chek Guide User Manual page 109

The test strip may be damaged,
not properly inserted, or was
previously used.
Remove and reinsert the test
strip or replace it if damaged or
previously used.
Meter Maintenance and Troubleshooting
A meter or test strip error has occurred.
Repeat the blood glucose test.
If a second E‑3 code appears, perform a control test with the
control solution and a new test strip.
• If the control result is within the acceptable range, review the
proper testing procedure and repeat the blood glucose test with
a new test strip.
• If the control result is not within the acceptable range, see the
Understanding Out‑of‑Range Control Results section in the
chapter Control Tests.
In rare cases, an E‑3 error code may indicate that your blood
glucose is extremely high and above the system's reading range.
If you do not feel like your blood glucose is extremely high, repeat
the blood glucose test. See the Unusual Blood Glucose Results
section in the chapter Blood Glucose Tests. If the E‑3 code still
appears for your blood glucose test, contact your healthcare
professional immediately.
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