Tandem is correcting Mobi insulin pumps operating on affected software versions (7.6.0.1, 7.6.0.3, and 7.7.0.1) which may incorrectly detect a motor issue.

http://www.fda.gov/medical-devices/medical-device-recalls-and-early-alerts/insulin-pump-correction-tandem-diabetes-care-issues-correction-tandem-mobi-insulin-pumps