Accu-Chek Performa Error codes Insert Strip The meter is ready for you to insert a test strip. Battery Issue Battery is dead. Insert new battery. Insert one 3-volt lithium… Setup Mode The meter is in set-up mode, waiting for you to change or… Insert Blood Sample The meter is ready for a drop of blood or control solution. E-10 The time and date settings may be incorrect. Make sure the… E-9 The battery is almost out of power. Change the battery now. If… E-8 The temperature is above or below the proper range for the… E-7 An electronic error occurred, or in rare cases, a used test… E-6 Blood or control solution was applied to the test strip before… E-4 Not enough blood or control solution was drawn into the test… E-3 Your blood glucose may be extremely high or a meter or a test… E-1 The test strip may be damaged or not properly inserted. Remove… LO Your meter measures blood glucose within a defined range (0.6–… HI Your meter measures blood glucose within a defined range (0.6–… White screen Battery is dead. Insert new battery. Insert one 3-volt lithium… View all error messages Product Support Get the most out of your Accu-Chek products with support and troubleshooting tips. Videos Library User manuals & guides FAQ's