Glucose Meter error codes
People with diabetes need glucose meters to keep track of how much sugar is in their blood. These meters are made to give exact readings, but mistakes can happen sometimes for a number of reasons. Each brand and type of glucose meter may have its own error code system to show different problems. Even though I can’t give you a complete list of all error codes for every meter, I can give you some common error codes and what they might mean:
Please keep in mind that if your glucose meter gives you an error code, you need to look at the device’s user instructions or call the manufacturer’s customer service for specific steps and help.
| Error Code: | Description: | Troubleshooting: |
|---|---|---|
| Err | The meter was unable to read the blood sample. | Try again using a new test strip. If the error persists, contact the manufacturer of your glucose meter. |
| E1 | The test strip was not inserted correctly. | Make sure the test strip is inserted all the way into the meter and that the barcode is facing up. |
| E2 | The test strip is expired. | Check the expiration date on the test strip and replace it if it is expired. |
| E3 | The meter or the test strip is defective. | Contact the manufacturer of your glucose meter for assistance. |
| E4 | There is not enough blood on the test strip. | Apply a fresh drop of blood to the test strip and try again. |
| E5 | The meter is not calibrated. | Calibrate the meter according to the instructions in the user manual. |
| E6 | The meter is out of range. | This error code may appear if your blood sugar is extremely high or low. If your blood sugar is high, contact your healthcare provider immediately. If your blood sugar is low, eat a snack or drink a sugary beverage and wait 15 minutes before testing again. |
| E7 | The meter is not detecting blood. | Make sure the test strip is inserted correctly and that there is enough blood on the test strip. If the error persists, contact the manufacturer of your glucose meter. |
| E8 | The meter is detecting too much blood. | Wipe away any excess blood from the test strip and try again. |
| E9 | The meter is reading the blood sample too slowly. | This error code may appear if your blood sugar is very high or low. If your blood sugar is high, contact your healthcare provider immediately. If your blood sugar is low, eat a snack or drink a sugary beverage and wait 15 minutes before testing again. |
ErC
Your blood glucose meter is not yet connected to your phone app or has been restarted. Please put your blood glucose meter the way it tells you to.
ErD
All of the test strips in your bottle have been used. Please scan a different bottle.
ErE
The date on the test strips has passed. Please scan a new test strip bottle.
ErF
While the battery is being charged, it is not possible to take a reading. Please wait until the battery is fully charged before taking a new reading with the blood glucose meter.
Lo Glucose amount in the blood is less than 20 mg/dL (1.1 mmol/L).
Use a new test strip and do a new test.
If the blood glucose meter keeps showing “Lo,” you should talk to your doctor.
Hi
More than 600 mg/dL (33.3 mmol/L) of glucose in the blood.
How to wash and dry your hands.
Use a new test strip and do a new test.
If the blood glucose meter keeps showing a high level of Hello, you should talk to your doctor.
Er0: No power. Please charge the battery so that you can try again.
Er2, Er3, Er4, etc.
Do another test with a new set of test strips. If the problem keeps happening, call tech help.
Er5
Too little heat is in the room. The range at which the blood glucose meter works is between 10°C and 40°C (50°F and 104°F).
Er6
Too much heat is in the room. The range at which the blood glucose meter works is between 10°C and 40°C (50°F and 104°F).
Er8: Problem with communication. Please try again after re-pairing your blood glucose meter with your phone via Bluetooth.
Er9
During the measurement, the test strip was taken out. Please use a new test strip and try again.
If you see any of these error codes, you should not try to use the glucose meter. Instead, contact the manufacturer of your glucose meter for assistance.
Here are some additional tips for troubleshooting glucose meter error codes:
- Make sure that you are using the correct type of test strip for your glucose meter.
- Make sure that the test strip is not expired.
- Make sure that you are applying the blood to the test strip correctly.
- Clean the test strip port on the meter if it is dirty.
- Calibrate the meter according to the instructions in the user manual.
If you have tried these troubleshooting tips and you are still getting an error code, it is time to call a qualified technician. They will be able to diagnose the problem and repair your glucose meter.