Contour Next One Meter error codes can be frustrating, but codes like E2, E4, and E8 usually indicate a simple issue: the test strip is compromised. Understanding these codes is key to accurate management, but having a fresh supply of strips is the only way to fix them.

In this guide, we explain the solution for every error code and provide direct access to our In-Stock Inventory so you can replace your wasted strips and get back to testing immediately.

3 Types of Contour Next One Meter Error Codes

• Strip Errors: These occur when there’s a problem with the test strip—such as it being inserted incorrectly, damaged, or reused.
• Testing Errors: Often related to environmental factors like temperature being too high or low during testing.
• System Errors: These indicate an issue with the meter’s internal hardware or software, and may require a reset or contacting support.

Contour Next Strip Error Codes – E1 to E8

Error Code E1 – Too Little Blood: This error appears when you haven’t applied enough blood to the test strip. Remove the strip and try again with a new one, ensuring you apply a sufficient sample.

Error Code E2 – Used Test Strip: The E2 code means the meter has detected a used strip. Always use a fresh, unused Contour Next test strip for accurate readings.

Error Code E3 – Strip Inserted Upside Down: If the strip is inserted incorrectly (usually upside down), the meter will show E3. Remove the strip and reinsert it with the contact bars facing up.

Error Code E4 – Wrong Test Strip Type: E4 means the test strip is not compatible with the Contour Next One Meter. Only use Contour Next test strips. For more info, see our guide on Contour Test Strips Compatibility.

Error Code E6 – Moisture-Damaged Strip: This error occurs when a test strip has been exposed to moisture and is no longer reliable. Discard the strip and use a new, properly stored one.

Error Code E8 – General Strip or Testing Error: E8 is a catch-all error. Try retesting with a new strip. If it happens again, contact Customer Service for assistance (see contact info below).

Contour Next One Meter Testing Error Codes – E20 to E28

Error Code E20 – General Testing Error: E20 usually appears when there is a problem during the testing process. Remove the strip, insert a new one, and retest. If the issue continues, restart the meter or contact Customer Service.

Error Code E24 – Too Cold for Control Solution Test: The meter, strip, or control solution is too cold for accurate testing. Move everything to a warmer room and wait 20 minutes before retesting.

Error Code E27 – Too Cold for Testing: The environment is too cold to perform a blood glucose test. Allow the meter and strip to reach room temperature, then try again after 20 minutes.

Error Code E28 – Too Hot for Testing: The meter or test strip is too warm. Relocate them to a cooler area and wait at least 20 minutes before testing again.

Contour Next One Meter System Error Codes – E30 to E99

Error Codes E30–E99 – Meter Malfunction: These system error codes signal a malfunction in the meter’s internal hardware or software. To troubleshoot:

• Turn the meter off, wait a few seconds, and turn it back on.
• Try testing again with a new strip.
• If the error continues, contact Contour Customer Service for further assistance.

How to Avoid Contour Next One Meter Error Codes

Now that you understand what the error codes mean, here are simple steps you can take to avoid the most common Contour Next One Meter errors:

• Use the correct test strips: The Contour Next One Meter only works with Contour Next test strips. Using other types may cause error messages or inaccurate readings.
• Store strips properly: Keep your test strips in a cool, dry place. Avoid heat, humidity, or direct sunlight, which can damage the strips and cause errors like E6.
• Always use a new strip: Never reuse a test strip. Doing so can result in E2 or incorrect readings.
• Apply a sufficient blood sample: Too little blood may trigger an E1 error. Wait for the meter to prompt you before applying blood.
• Insert strips correctly: Insert the strip with the contact bars facing up and fully into the port to avoid E3 errors.
• Wait for the beep before removing: Don’t remove the strip too early—wait for the meter to finish the test to prevent incomplete results.
• Clean your meter regularly: Gently wipe the meter with a soft, damp cloth to keep the sensor area free from residue or dust.

Contour Next One Meter Error Codes: Additional Tips

• Wash your hands before testing: Clean hands help prevent contamination and ensure a more accurate reading.
• Choose a clean, dry finger: Avoid fingers that are wet, swollen, or have cuts or wounds.
• Prick the side of your fingertip: This area is typically less sensitive and causes less discomfort.
• Massage your finger gently: This encourages blood flow and makes it easier to obtain a sample.
• Apply blood to the strip immediately: Don’t let the sample dry out—apply it right after pricking for best results.

Following these additional tips can help you avoid unnecessary error codes and improve the accuracy of your Contour Next One Meter readings.

Contacting Contour Next Customer Service – Checklist

If you're experiencing issues with your Contour Next ONE Meter and need additional help, you can reach Ascensia Diabetes Care at:

📞 Phone: 1-800-348-8100
🕒 Hours: Monday to Friday, 8:00 AM – 12:00 AM (Midnight) EST
🌐 Languages: Support is available in both English and Spanish.

To make your support call go smoothly, have the following information ready:

1. Your Contour Next ONE Meter, Contour Next test strips, and control solution
2. The meter’s model number and serial number (usually found on the back)
3. The expiration date on your test strip bottle
4. The meter’s battery status

Contour Next One Meter Error Codes: A Final Word

Understanding Contour Next One Meter error codes—and knowing how to fix them—can go a long way in ensuring reliable and accurate blood glucose readings. By recognizing what each code means and how to respond, you’ll be better equipped to avoid disruptions in your testing routine.

If you continue to experience issues or need help with a specific error, don’t hesitate to contact Contour Customer Service for expert support. Accurate readings are essential for effective diabetes management, and being prepared helps you stay in control.

If you're shopping for Contour Next test strips, be sure to check out our full selection of Bayer / Ascensia diabetes care products. We offer reliable options at lower prices than most retail stores—with no insurance required.

Guides to Using Contour Next Test Strips

• Contour Test Strips Compatibility with Contour Next Meters: A Guide

• How to Calibrate Contour Next Test Strips

Products Mentioned in This Blog Post

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