Dexcom G6 Transmitter 9445-02Recalls & reported problems

Summary

The FDA's MAUDE database contains 229,493 adverse event reports that list this exact device (DI 00386270000385), received between Apr 2, 2018 and Sep 22, 2026 — classified as 3 deaths, 109 injuries, 229,381 malfunctions.

The most frequently reported specific device problem is “No Device Output” (117,075 reports).

Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. How this data works · Data updated Oct 13, 2026.

Most reported problems

Recent adverse event reports

The 25 most recent of 229,493 reports, in the reporter's own words as published by the FDA.

• MalfunctionSep 22, 2026Wireless Communication Problem

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50862281 ↗
• MalfunctionSep 17, 2026No Device Output

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50810370 ↗
• MalfunctionSep 10, 2026Wireless Communication Problem

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50724578 ↗
• MalfunctionAug 28, 2026Wireless Communication Problem

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50509626 ↗
• MalfunctionAug 26, 2026No Device Output

  It was reported that a transmitter battery issue occurred. No product or data was provided for evaluation. The allegation and a probable cause could not be determined. No injury or medical intervention was reported.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50453902 ↗
• MalfunctionAug 17, 2026Wireless Communication Problem

  It was reported that a signal loss occurred. No product or data was provided for evaluation. The allegation and a probable cause could not be determined. No injury or medical intervention was reported.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50279293 ↗
• MalfunctionAug 13, 2026No Device Output

  It was reported that a transmitter battery issue occurred. No product or data was provided for evaluation. The allegation and a probable cause could not be determined. No injury or medical intervention was reported.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50234354 ↗
• MalfunctionAug 11, 2026No Device Output

  It was reported that a transmitter battery issue occurred. No product or data was provided for evaluation. The allegation and a probable cause could not be determined. No injury or medical intervention was reported.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50208906 ↗
• MalfunctionJul 29, 2026Wireless Communication Problem

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50069821 ↗
• MalfunctionJul 27, 2026No Device Output

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50021678 ↗
• MalfunctionJul 27, 2026Wireless Communication Problem

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50013787 ↗
• MalfunctionJul 9, 2026No Device Output

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25763146 ↗
• MalfunctionJul 1, 2026Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. IT WAS INDICATED THAT THE PATIENT USED AN EXPIRED PRODUCT, WHICH IS MISUSE OF THE DEVICE. IT WAS INDICATED THAT THE PATIENT WAS USING AN UNSUPPORTED OPERATING SYSTEM, WHICH IS MISUSE OF THE DEVICE. PERFORMANCE DATA WAS REVIEWED. THE ALLEGATION WAS CONFIRMED DUE TO THE FINDING OF SIGNAL LOSS OVER AN HOUR WITHIN THE INVESTIGATION WINDOW. THE PROBABLE CAUSE WAS THE TRANSMITTER AND APP WERE UNABLE TO COMPLETE A DATA TRANSFER. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25685788 ↗
• MalfunctionJun 29, 2026Wireless Communication Problem

  IT WAS REPORTED THAT A SIGNAL LOSS OCCURRED. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25661547 ↗
• MalfunctionJun 23, 2026Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. IT WAS INDICATED THAT THE PATIENT WAS USING AN UNSUPPORTED OPERATING SYSTEM, WHICH IS MISUSE OF THE DEVICE. PERFORMANCE DATA WAS REVIEWED. THE ALLEGATION WAS CONFIRMED DUE TO THE FINDING OF SIGNAL LOSS OVER AN HOUR WITHIN THE INVESTIGATION WINDOW. THE PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25598155 ↗
• MalfunctionJun 23, 2026No Device Output

  IT WAS REPORTED THAT A TRANSMITTER BATTERY ISSUE OCCURRED. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25597783 ↗
• MalfunctionJun 15, 2026Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. IT WAS INDICATED THAT THE PATIENT WAS USING AN UNSUPPORTED OPERATING SYSTEM, WHICH IS MISUSE OF THE DEVICE. IT WAS INDICATED THAT THE PATIENT USED AN EXPIRED PRODUCT, WHICH IS MISUSE OF THE DEVICE. PERFORMANCE DATA WAS REVIEWED. THE ALLEGATION WAS CONFIRMED DUE TO THE FINDING OF SIGNAL LOSS OVER AN HOUR WITHIN THE INVESTIGATION WINDOW. THE PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25504657 ↗
• MalfunctionJun 10, 2026Wireless Communication Problem

  IT WAS REPORTED THAT A SIGNAL LOSS OCCURRED. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25462402 ↗
• MalfunctionJun 8, 2026No Device Output

  IT WAS REPORTED THAT A TRANSMITTER BATTERY ISSUE OCCURRED. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25431193 ↗
• MalfunctionJun 1, 2026Low Readings

  IT WAS REPORTED THAT AN INACCURACY BETWEEN THE CONTINUOUS GLUCOSE MONITOR (CGM) AND THE BLOOD GLUCOSE (BG) METER OCCURRED. THE SENSOR WAS INSERTED INTO THE UPPER BUTTOCKS, WHICH IS OFF-LABEL USAGE OF THE DEVICE, ON (B)(6) 2026. DATA WAS EVALUATED AND THE ALLEGATION WAS CONFIRMED. THE PROBABLE CAUSE COULD NOT BE DETERMINED VIA DATA. THE REPORTED GLUCOSE VALUES FALL WITHIN THE D ZONE OF THE PARKES ERROR GRID. THE DATA INVESTIGATION FOUND A DIFFERENCE IN VALUES THAT FALL WITHIN THE D ZONE OF THE PARKES ERROR GRID. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: Hyperglycemia

  MAUDE report 25351981 ↗
• MalfunctionMay 14, 2026Wireless Communication Problem

  IT WAS REPORTED THAT"SIGNAL LOSS" OCCURRED. IT WAS INDICATED THAT THE PATIENT USED AN EXPIRED PRODUCT, WHICH IS MISUSE OF THE DEVICE. NO PRODUCT OR DATA WAS PROVIDED FOR INVESTIGATION. THE ALLEGATION AND THE PROBABLE CAUSE CANNOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25167111 ↗
• MalfunctionMay 12, 2026Wireless Communication Problem

  IT WAS REPORTED THAT A SIGNAL LOSS OCCURRED. IT WAS INDICATED THAT THE PATIENT USED AN EXPIRED PRODUCT, WHICH IS MISUSE OF THE DEVICE. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25151309 ↗
• MalfunctionMay 5, 2026Wireless Communication Problem

  IT WAS REPORTED THAT A SIGNAL LOSS OCCURRED. IT WAS INDICATED THE PATIENT STARTED THEIR TRANSMITTER PAST THE 'USE BY' DATE, WHICH IS MISUSE OF THE DEVICE. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25089000 ↗
• MalfunctionMay 1, 2026Wireless Communication Problem

  IT WAS REPORTED THAT A SIGNAL LOSS OCCURRED. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25062397 ↗
• MalfunctionApr 25, 2026Wireless Communication Problem

  SUBSEQUENT TO THE INITIAL MDR, A CORRECTION IS REQUIRED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24991288 ↗