The meter time and date have been changed to match the paired pump.

An electronic error has occurred.
Contact Accu-Chek Customer Care at 1-800-363-7949.

Fluid or foreign material may be present in the test strip slot.
Remove and reinsert the test strip or repeat the blood glucose or control test with a new test strip. If the problem persists, contact Accu-Chek Customer Care at 1-800-363-7949.

Your blood sample may contain a high level of ascorbate.
Contact your healthcare professional.

The test strip may be damaged. 
Retest with a new test strip.

The time and date setting may be incorrect.
Make sure the pump is in communication range of the meter to update the time and date.

The batteries may be out of power.
Turn the meter back on. If you are in a cold environment, move to a location with a more moderate temperature and retest. If the message continues to appear after several attempts, replace the batteries. If the message reappears after the batteries have been replaced, remove the batteries, press and hold the Power/Set/OK button for at least 2 seconds, then reinsert the batteries.

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 and repeat the blood glucose or control test. Do not artificially heat or cool the meter.

An electronic error occurred.
Remove the batteries, press and hold the Power/Set/OK button for at least 2 seconds, and reinsert the batteries.
Perform a blood glucose or control test.

Blood or control solution was applied to the test strip before ""Apply drop"" appeared.
Discard the test strip and repeat the blood glucose or control test.