Accu-Chek Aviva Owner's Booklet page 18

Control Tests
Troubleshooting Checks
8. Does the code number on the meter
display match the code number on the test
strip container?
9. Are you still unsure of the problem?
16
action
If they do not match, insert the correct code key in the
meter and test again.
Contact the ACCU‑CHEK Customer Care Service Center
at 1‑800‑858‑8072.