Medtronic 670g Insulin Pump occasionally loses Sensor Glucose (SG)

Medtronic 670G Insulin Pump on Safe Basal Screen with no sensor data

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The above photo is of my Medtronic 670g Minimed Insulin Pump when it isn’t getting a signal from the Guardian CGM.  This can happen occasionally, and Medtronic’s instructions are to move the pump closer to the transmitter.  This does NOT mean that the transmitter battery needs charging.

The first time I saw this, I assumed that there was an issue with the transmitter battery. That was not the case!

There are lots of reasons this can happen, but generally the advice is to move the pump closer to the sensor.

I find this happens frequently when using an electric blanket.  I like to snuggle up on the couch with an electric blanket.  Because of this issue, I’ve started clipping the insulin pump to the top of my sweatshirt when using the electric blanket, so that the blanket is not covering it.

This happens occasionally when not wearing an electric blanket, but most of the time it recovers the signal without me doing anything.

This mode is called “Safe Basal” and you can read more about it on Medtronic’s Safe Basal support page.  It will stay in that mode for up to 30 minutes without sensor glucose (SG) data.

Relax and take another look at it in 5-10 minutes

Most likely, it’ll get the signal back!   If this is a continual issue for you, you may want to talk to Medtronic support.

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