Accu-Chek Aviva Owner's Booklet page 87

The code key is incorrect. Turn off
the meter and insert a new code key.
If this does not fix the problem,
contact the ACCU‑CHEK Customer
Care Service Center at
1‑800‑858‑8072.
Your blood glucose may be extremely
high or a meter or a test strip error
has occurred. If this confirms how
you feel, contact your healthcare
professional immediately. If it does
not confirm how you feel, repeat the
test and refer to Chapter 3, "Unusual
Test Results." If this does not confirm how you feel,
perform a control test with your control solution and
a new test strip. If the control result is within the
acceptable range, review the proper testing
procedure and repeat your blood glucose test with a
new test strip. If the E‑3 code still appears for your
blood glucose test, your blood glucose result may be
extremely high and above the system's reading
range. Contact.your.healthcare.professional.
immediately. If the control result is not within the
acceptable range, see Chapter 2, "Understanding
Out‑of‑Range Control Test Results."
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