# Multiple calibrations needed by G6 sensor on startup **URL:** \ **Category:** C/GM\ **Tags:** dexcom\ **Created:** [September 15, 2018, 4:26pm UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997 "2018-09-15T16:26:21Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![kpanda01](https://avatars.discourse-cdn.com/v4/letter/k/bbe5ce/32.png) [@kpanda01](https://forum.fudiabetes.org/u/kpanda01)\ **Post date:** [September 15, 2018, 4:26pm UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/1 "2018-09-15T16:26:21Z")
Although I’ve said I have had great success with the G6, I’ve had a couple quirky experiences in a row this weekend and am curious @TiaG if you guys have seen this? I replaced my sensor yesterday, waited for the two hour warmup, and was surprised to get a “enter two calibrations” message! Isn’t the whole point of the G6 that it doesn’t require that? I entered the calibrations, because it wouldn’t give me readings without them, and as the day went on it was never close to accurate (it read LOW for a half hour after a jimmy johns sandwich…trust me that I wasn’t low after that!!). It kept missing readings, had a couple sensor errors, and was all around unusable. By midnight it was hurting a little, I’d had a couple drinks and was feeling feisty so I took the dang thing off and started over. Hoped to wake up to a fully functioning new sensor. Nope. Calibrations required again!! So weird. I wouldn’t mind the calibrations if it worked, but I had three sensor errors in just a few hours this morning! I called Dexcom and was told about the calibrations that “it can happen” if it needs additional input and might be because I inserted it into a lean area (most of mine go in lean areas). They were both tender/uncomfortable and one bled a little, so that may be part of the issue. Anyway, they are replacing both and I’m a half hour into the warmup of my third one since yesterday. I’m keeping my fingers crossed that this one just works like it’s supposed to. Just sharing since I had googled this morning and couldn’t find any posts anywhere about a G6 requiring calibrations. Maybe I’m the only one? ---
**Author:** ![kpanda01](https://avatars.discourse-cdn.com/v4/letter/k/bbe5ce/32.png) [@kpanda01](https://forum.fudiabetes.org/u/kpanda01)\ **Post date:** [September 15, 2018, 7:20pm UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/2 "2018-09-15T19:20:51Z")
Quick update: sensor #3 needed calibrations to start up as well. I refuse to believe that this just “sometimes happens” 3 times in a row after 6 months of great results. Something has to be going on with the sensors, or transmitter, or something, right? Again, I don’t care as much about the calibrations, I just want it to work, and the last two certainly haven’t. Jury’s still out on this one. ---
**Author:** ![Michel](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/michel/32/387_2.png) [@Michel](https://forum.fudiabetes.org/u/Michel)\ **Post date:** [September 15, 2018, 7:26pm UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/3 "2018-09-15T19:26:43Z")
@kpanda01, I moved your topic to its own thread, I figure the problem is different enough to warrant its own title! ---
**Author:** ![kpanda01](https://avatars.discourse-cdn.com/v4/letter/k/bbe5ce/32.png) [@kpanda01](https://forum.fudiabetes.org/u/kpanda01)\ **Post date:** [September 15, 2018, 8:22pm UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/4 "2018-09-15T20:22:33Z")
Thanks! Hope I didn’t run afoul of good forum etiquette by tacking on to her thread! 🙀 ---
**Author:** ![Michel](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/michel/32/387_2.png) [@Michel](https://forum.fudiabetes.org/u/Michel)\ **Post date:** [September 15, 2018, 8:36pm UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/5 "2018-09-15T20:36:41Z")
No worries. It is typically better to do a new thread when the issue is not _exactly_ the same (it also helps with search, since many threads end up showing in search results)—but the boundaries for such determination are often fuzzy 🙂 ---
**Author:** ![vanc](https://avatars.discourse-cdn.com/v4/letter/v/e5b9ba/32.png) [@vanc](https://forum.fudiabetes.org/u/vanc)\ **Post date:** [September 15, 2018, 9:03pm UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/6 "2018-09-15T21:03:36Z")
I think it has been reported elsewhere that restarting a new sensor too quickly after stopping the previous could cause some issues like that. If you change sensors quickly, you might try waiting 5-10 mins before starting the new one. ---
**Author:** ![CatLady](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/catlady/32/36_2.png) [@CatLady](https://forum.fudiabetes.org/u/CatLady)\ **Post date:** [September 15, 2018, 10:48pm UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/7 "2018-09-15T22:48:34Z")
> [@kpanda01](#): > > waited for the two hour warmup Still requires 2 hours? ---
**Author:** ![kpanda01](https://avatars.discourse-cdn.com/v4/letter/k/bbe5ce/32.png) [@kpanda01](https://forum.fudiabetes.org/u/kpanda01)\ **Post date:** [September 15, 2018, 11:15pm UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/8 "2018-09-15T23:15:37Z")
Yep, same 2 hour warmup as what I believe the prior versions had. Normally at the end of the warmup though, it just starts giving readings. At least that’s how it worked for me for the last 6 months! Until this weekend! ---
**Author:** ![kpanda01](https://avatars.discourse-cdn.com/v4/letter/k/bbe5ce/32.png) [@kpanda01](https://forum.fudiabetes.org/u/kpanda01)\ **Post date:** [September 16, 2018, 12:06am UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/9 "2018-09-16T00:06:03Z")
Thank you for this! I hadn’t heard this before. I’ll give it a try next time!! ---
**Author:** ![Thomas](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.fudiabetes.org/thomas/32/1719_2.png) [@Thomas](https://forum.fudiabetes.org/u/Thomas)\ **Post date:** [September 16, 2018, 2:48am UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/10 "2018-09-16T02:48:40Z")
> [@CatLady](#): > > Still requires 2 hours? Yeah - It was the Libre that recently was reduced to a 1-hour warmup. [All] Dexcom is still 2 hours. ---
**Author:** ![Samuel89](https://avatars.discourse-cdn.com/v4/letter/s/2acd7d/32.png) [@Samuel89](https://forum.fudiabetes.org/u/Samuel89)\ **Post date:** [February 16, 2021, 8:36am UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/11 "2021-02-16T08:36:33Z")
Hello I’m having the same issue calling in the morning because I hav a now gone thru a whole box of sensors in 3 days now ---
**Author:** ![Samuel89](https://avatars.discourse-cdn.com/v4/letter/s/2acd7d/32.png) [@Samuel89](https://forum.fudiabetes.org/u/Samuel89)\ **Post date:** [February 16, 2021, 8:44am UTC](https://forum.fudiabetes.org/t/multiple-calibrations-needed-by-g6-sensor-on-startup/4997/12 "2021-02-16T08:44:39Z")
Ohh and also I haven’t have as many issue till this new script for 3 months but I’ve have the extreme lows from 110 to double arrows down at 43 the next reading and the is spacing out inbetween sensors as I fell asleep woke up to sensor error replace sensor at 1 45 and just now warmed up im at 288 with a "southeast arrow " as we call it in my house but reading and that cause me to be up all night as my diabetic enteropathy I’ve had 3 "accidents that I’ve woke up to and now am 31 years old live back at home with my mom because I can’t take always take care of myself sorry a bit of an over share but this makes life so much harder for this to change and I even tried my second on in my abdomen because the always recommend it but I weight 110 pounds because of all this chain reaction sorry for the rant but I need help and this new one that I put hurts so ill keep ya updated on what dexcom says