CGM features and fixes · Dexcom Stelo

Dexcom Stelo sensor error

Brief Sensor Issue means the sensor cannot read glucose for now. It often happens on day 1 and usually fixes itself within 3 hours. It can lead to Session Ended Early. (Stelo (Dexcom))

What the maker says to do

1. Check the sensor and tap Help in the app.
2. If it lasts more than 3 hours, sign in to your Stelo account and submit a product support request.

Stelo is sold over the counter in the US only. Dexcom says your primary residence and your Stelo account must be in the US.

More on the Dexcom Stelo

• Signal loss
• Warm-up
• Sensor failed early
• Compression lows
• Alarms not sounding
• Compatible phones

Sensor error on other CGMs

• Dexcom G6
• Dexcom G7
• Dexcom ONE+
• FreeStyle Libre 2 and 2 Plus
• FreeStyle Libre 3 and 3 Plus
• Medtrum TouchCare Nano CGM
• Eversense 365
• Medtronic Simplera
• SIBIONICS GS1

Sources, quoted

• Stelo (Dexcom): “This issue often happens during the first day of a biosensor session, but it can happen anytime. It usually fixes itself within 3 hours.”
• Stelo (Dexcom): “Check your biosensor. Tap Help in the app for more information on troubleshooting.”
• Stelo (Dexcom): “If Brief Sensor Issue continues for more than 3 hours, log in to your Stelo account and submit a product support request.”

Every quote is checked against its source page before each update of this site; last checked 2026-10-06. Makers change their apps; the source page is the authority when it differs.