Contact us for assistance. 1-800-363-7949 Monday - Friday 9 am - 6 pm (ET).

The test strip may be damaged or not properly inserted. Remove and reinsert the test strip, or replace it if damaged.

The activation chip is incorrect. Turn the meter off and insert a new activation chip. If you need a activation chip, contact Accu-Chek Customer Care at 1-800-363-7949.

Your blood glucose may be extremely high or a meter or a test strip error has occurred.

If your test result matches how you feel, contact your healthcare professional immediately.

If your test result does not match how you feel, repeat the blood glucose test.

If the E-3 code still appears for your blood glucose test, your blood glucose result may be extremely high and above the system’s reading range. Contact your healthcare professional immediately.

If the second test result does not match how you feel, perform a control test with the control solution and a new test strip.

If the control result is within the acceptable range, review the proper testing procedure and repeat the blood glucose test with a new test strip.

If the control result is not within the acceptable range,see Chapter 4 of your user manual: Understanding Out-of-Range Control Results.

Not enough blood or control solution was drawn into the test strip for measurement or was applied after the test had started. Discard the test strip and repeat the blood glucose or control test.

This message may appear when using a white code key in the meter. It means the white code key is from an expired lot of test strips.

Turn the meter off and insert a black activation chip. Make sure the time and date in the meter are correct.

New meters are already coded and come with a pre-inserted black activation chip that you never need to change.

Even if you use test strips from test strip boxes that contain another code key that is a different color of different code numbers, you never need to change the black activation chip.

If you don’t have a black activation chip, contact Accu-Chek Customer Care at 1-800-363-7949.

Blood or control solution was applied to the test strip before the flashing drop symbol appeared on the display. Discard the test strip and repeat the blood glucose or control test.

An electronic error occurred, or in rare cases, a used test strip was removed and reinserted. Turn the meter off and on, or take the battery out for 20 seconds and reinsert it. Perform a blood glucose or control test.

The temperature is above or below the proper range for the system. Refer to the test strip package insert for system operating conditions. Move to an area with the appropriate conditions, wait 5 minutes, and repeat the blood glucose or control test. Do not artificially heat or cool the meter.

The battery is almost out of power. Change the battery now.  Insert two 3-volt lithium batteries (coin cell type CR2032).

If the message reappears after the battery has been replaced, remove the battery again, press any meter button, then reinsert the battery.

The time and date settings may be incorrect. Make sure the time and date are correct and adjust, if necessary.

Battery power is low. Change the battery soon. Insert two 3-volt lithium batteries (coin cell type CR2032).

Battery is dead. Insert two 3-volt lithium batteries (coin cell type CR2032).

Display is damaged. Contact Accu-Chek Customer Care at 1-800-363-7949.

Meter is defective. Contact Accu-Chek Customer Care at 1-800-363-7949.

Extreme temperatures. Move the meter to a more temperate area.

The meter is in set-up mode, waiting for you to change or confirm settings.

The meter is ready for you to insert a test strip.

The meter is ready for a drop of blood or control solution.

The meter is not coded or the activation chip is not inserted.

New meters are already coded and come with a pre-inserted black activation chip that you never need to change.

Even if you use test strips from test strip boxes that contain another code key that is a different color of different code numbers, you never need to change the black activation chip.

If you don’t have a black activation chip, contact Accu-Chek Customer Care at 1-800-363-7949.

Your meter measures blood glucose within a defined range (0.6–33.3 mmol/L).

The display may indicate that your blood glucose is above the measuring range of the system (33.3 mmol/L).

Immediately repeat the test. If your test result matches how you feel, contact your healthcare professional immediately.

If this does not match how you feel, contact Accu-Chek Customer Carer at 1-800-363-7949.

Your meter measures blood glucose within a defined range (0.6–33.3 mmol/L).

The display may indicate that your blood glucose is lower than the measuring range of the system (0.6 mmol/L).

Immediately repeat the test. If your test result matches how you feel, contact your healthcare professional immediately.

If this does not match how you feel, contact Accu-Chek Customer Care at 1-800-363-7949.