Accu-Chek® Guide
Error codes Strip Error (E-1)
The test strip may be damaged, not properly inserted, or was previously used.
Remove and reinsert the test strip or replace it if damaged or previously used.
For health professionals 
For health professionals
The test strip may be damaged, not properly inserted, or was previously used.
Remove and reinsert the test strip or replace it if damaged or previously used.
