E-3: An error occurred during the measurement (often a blood volume issue). E-4: Not enough blood was applied to the strip. E-9: The batteries are almost out of power.
This permanently deletes all past blood glucose results. Only do this if you are starting fresh with a new user or selling/donating the meter. accu chek reset
If your meter still malfunctions after these steps, the device may be faulty. Accu-Chek offers free replacement for many models under warranty (typically 3-5 years). E-3: An error occurred during the measurement (often