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Display Shows Possible Cause(s) Possible Solution(s)
E‑51 Bad Strip
Error
j Your blood sugar may be
extremely low.
If you see this error message after you applied blood
to the test strip:
j If you are experiencing any of the common
symptoms of low blood sugar, contact your
healthcare professional immediately.
j Treat your low blood sugar as recommended by
your healthcare professional.
j If this does not conrm how you feel, repeat the
test and see Chapter 2, “Testing Your Blood Sugar.”
j The test strip is damaged.
j The test strip is not properly
inserted into the meter.
If you see this error message before you applied
blood to the test strip:
j Remove the test strip and reinsert it, or replace it if
damaged. Verify that the code number printed on
the test strip container matches the code number
printed on the code key currently inserted in the
meter. If the message reappears, contact
ACCU-CHEK Customer Care Service Center at
1-800-688-4578.