Accu-Chek Instant Error codes E-12 Your blood sample may contain a high level of ascorbate.Contact your healthcare professional. Blank The meter will not turn on or the display is blank. E-14 An electronic error has occurred. E-13 Fluid or foreign material may be present in the test strip… E-11 The test strip may be damaged. E-10 The time and date setting may be incorrect. E-9 The batteries may be out of power. E-8 The temperature is above or below the proper range for the… E-7 An electronic error occurred. E-6 Blood was applied to the test strip before the flashing drop… E-4 Not enough blood or control solution was drawn into the test… E-3 A meter or test strip error has occurred. E-1 The test strip may be damaged, not properly inserted, or has… Battery The batteries are almost out of power. Err The meter was unable to pair with a mobile device. USB The meter is connected to a PC, a blood glucose test cannot be… View all error messages Product Support Access videos, FAQs, guides and more to support you in setting up and using your Accu-Chek Instant meter. Support videos Downloads & Guides FAQs