Why does my Dexcom keep failing?
Andrew Ramirez
Published Mar 13, 2026
Why does my Dexcom keep failing?
During the warmup period, the Dexcom G6 CGM System may detect that your sensor is unable to retrieve glucose information once the session starts. At this time, the warmup period will end and your receiver or compatible smart device* will display the “Sensor Failed” screen. You will now need to replace the sensor.
Why do I keep getting calibration error on dexcom G6?
This screen means you recently entered a calibration blood glucose value and the sensor is having trouble calibrating. Follow the directions on the screen to enter a finger stick reading in 15 minutes to restore readings.
What do I do if my dexcom wont connect?
You can either try restarting the app on its own, or you can also reboot the smartphone as it is. Alternatively, the last resort is clearing the data off the app. To do that on (stock) Android: Open the Settings app.
What does it mean to calibrate Dexcom G6?
Calibrating your Dexcom G6 with your meter is never required. It can make the Dexcom G6 more accurate or less accurate compared to the lab result, but it should bring the G6 readings closer to the meter values. When calibrating, make sure: You enter the calibration within 5 minutes of taking a fingerstick.
What to do if your Dexcom app is not working?
In which case, we’d highly recommend communicating with the Dexcom tech support at 1-844-607-8398. 4: Dexcom G6 App Not Working One of the most common Dexcom errors isn’t even on Dexcom but its app. To be more specific, in the Dexcom G6 app.
Which is the most common error on Dexcom?
One of the most common Dexcom errors isn’t even on Dexcom but its app. To be more specific, in the Dexcom G6 app. It’s no surprise that it has an average rating of 2.5/5.
How do I start my Dexcom G6 sensor?
How do I start my Dexcom G6 sensor? How do I insert my Dexcom sensor? Does the Dexcom G6 Continuous Glucose Monitoring (CGM) System require calibrations? Is Dexcom CLARITY compatible with Dexcom G6?
Do you need a Dexcom receiver for your CGM system?
Do I need to use my Dexcom receiver for my Dexcom Continuous Glucose Monitoring (CGM) System to work? What is a sensor code and why do I need one?
How to keep my Dexcom sensor adhered for the full 10 days?
How can I keep my Dexcom sensor adhered for the full 10 days? What happens if my Dexcom G6 sensor deploys early? What do I do if my Dexcom G6 applicator won’t come off? Where can I order sensor overpatches? Does the Dexcom G6 Continuous Glucose Monitoring (CGM) System require calibrations? Can I restart the Dexcom G6 sensor after 10 days?
What does sensor error mean on Dexcom G6?
What does the Sensor Error alert mean? If you are experiencing a Sensor Error alert and are not getting Dexcom G6 readings, it means the sensor is temporarily unable to measure the glucose OR your components are not communicating. Tap the alert to get more information.
Why do I keep getting errors on my Dexcom?
It can also happen due to a bad fit, bad calibration, bad insertion, or generally a bad setup. In which case, all you can do is re-install it and make sure that everything was set-up correctly.
Do I need to use my Dexcom receiver for my Dexcom Continuous Glucose Monitoring (CGM) System to work? What is a sensor code and why do I need one?