Tandem recalls insulin pumps with software version 7.9 that may show incorrect glucose levels, risking dangerous insulin delivery. Affected pumps include Tandem t:slim X2 and Mobi models. Contact Tandem for remedy.
A software defect in Version 7.9 of the pump software for Tandem t:slim X2 and Tandem Mobi pumps, when used with Control IQ+ technology, will cause the pump to incorrectly interpolate glucose trends when the Estimated Glucose Value (EGV) is above 255 mg/dL at the start or end of a gap in data collection due to a lapse in connection from a paired continuous glucose monitor (CGM) sensor, which can lead to under-delivery or over-delivery of insulin based on inaccurate result leading to severe cases of hypoglycemia or hyperglycemia.
Tandem is recalling insulin pumps with software version 7.9 that may show incorrect glucose readings when used with certain diabetes monitors. This could cause dangerous insulin levels, leading to severe low or high blood sugar.
The software defect causes the pump to misread glucose levels when the monitor connection lapses. This can lead to incorrect insulin doses, potentially causing dangerous blood sugar spikes or drops.
People using Tandem t:slim X2 or Mobi pumps with Control IQ+ technology are affected. Those with diabetes who rely on these pumps for insulin delivery are most at risk.
Check for software version 7.9 on Tandem t:slim X2 or Mobi pumps. These pumps were sold with Control IQ+ technology for diabetes management.
Look for software version 7.9 on the pump's display or settings menu.
Reach out to Tandem Diabetes Care for guidance on next steps and potential remedies.
Software version 7.9 of the pump.
Incorrect glucose readings may lead to under or over-delivery of insulin, causing severe hypoglycemia or hyperglycemia.
No, but you should check the software version and contact Tandem for advice.
We’ve drafted a message you can send Tandem to request your refund or repair — edit it as you like.
Subject: Recall Z-1520-2025 — Tandem Tandem Hello, I own a Tandem that is covered by recall Z-1520-2025 from Tandem. I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this? Thank you.
Experiences, tips, and questions from readers. Every comment is reviewed before it appears.
No comments yet — be the first to share your experience.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official FDA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
