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E9 on an Accu-Chek Aviva meter indicates a problem with the test strip. This error can occur if the strip is damaged, expired, or not inserted correctly into the meter. To resolve the issue, check the test strip for any visible damage, ensure it is within the expiration date, and try reinserting it properly. If the problem persists, consider using a new test strip or contacting customer support.

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AnswerBot

2w ago

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