Accu-Chek Aviva Combo Owner's Booklet page 260

Display Shows
E-51 Bad Strip
Error
E-52 Code Key
Error
254
Possible Cause(s)
Your blood glucose may be
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extremely low.
The test strip is damaged.
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The test strip is not properly
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inserted into the meter.
The code key is incorrect.
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Possible Solution(s)
If you see this error message after you applied blood
to the test strip:
If you are experiencing any of the common
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symptoms of low blood sugar, contact your
healthcare professional immediately.
j Treat your low blood sugar as recommended by
your healthcare professional.
If this does not match how you feel, repeat the
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blood glucose test and see Chapter 2, Testing Your
Blood Glucose.
If you see this error message before you applied
blood to the test strip:
Remove the test strip and reinsert it, or replace it if
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damaged. Check the Use By date on the test strip
container. Do not use test strips past the Use By
date. If the message reappears call the ACCU-CHEK
Customer Care Service Center at 1-800-688-4578.
Please contact ACCU-CHEK Customer Care Service
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Center at 1-800-688-4578.