Error Messages; High Or Low Instead Of A Sensor Reading - Dexcom G6 Pro User Manual

A.2 Error Messages
Bluetooth Off
Action
Use meter. No glucose alarm/alerts or G6 Pro readings until fixed.
Turn Bluetooth on in phone settings. Wait up to 10 minutes for
transmitter and app to communicate.

High or Low Instead of a Sensor Reading

HIGH
mg/dL
Action
Wait. The system is working correctly. When patient is above 400,
system says "High." Below 40, it says "Low."
G6 Pro User Guide
Appendix A: FAQs and Troubleshooting
Problem
Phone's Bluetooth is off, so the transmitter
can't communicate with the app.
Not getting G6 Pro readings.
Display device and transmitter not
connecting.
Problem
Instead of displaying a sensor reading,
LOW
screen shows High or Low.
mg/dL
83