What does e3 mean on accu chek meter?

The "E3" error code on an Accu-Chek meter typically indicates a problem with the meter's internal components or a possible issue with the test strip. It may suggest that the test strip is not inserted correctly, is damaged, or not compatible with the meter. To resolve this issue, you should check the test strip for damage, ensure it’s properly inserted, and if the problem persists, consider resetting the meter or consulting the user manual for further troubleshooting steps.