# Alert: GPS1 not healthy

**URL:** <https://discuss.bluerobotics.com/t/alert-gps1-not-healthy/22283>\
**Category:** BlueBoat\
**Tags:** blueboat, cockpit\
**Created:** [January 15, 2026, 11:39am UTC](https://discuss.bluerobotics.com/t/alert-gps1-not-healthy/22283 "2026-01-15T11:39:27Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![MatteoBucci](https://avatars.discourse-cdn.com/v4/letter/m/bc8723/32.png) [@MatteoBucci](https://discuss.bluerobotics.com/u/MatteoBucci)\
**Post date:** [January 15, 2026, 11:39am UTC](https://discuss.bluerobotics.com/t/alert-gps1-not-healthy/22283/1 "2026-01-15T11:39:27Z")

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Hello, I’m experiencing some GPS-related issues.

On my BlueBoat I currently have two GNSS systems connected:

- a **high-precision Leica RTK GPS** , used for position/coordinates

- the original boat GPS **u-blox NEO-M9N with IST8308** , from I only use the compass information

During navigation I encounter the following issue:  
when I’m in Manual mode and press Play to start a mission, or when I switch to Auto mode, Cockpit shows this message:

**“GPS1: not healthy”**

In some cases, this also happens at the end of a mission.

What’s interesting is that I can work around the issue by arming the vehicle while still in Manual mode and then switching to Auto. When I do this, the warning usually disappears and the mission starts normally.

At this point, I’m wondering whether this is really a GPS-related problem or possibly some kind of bug or mode-transition issue.

If it were a GPS problem, I’m not sure what could be wrong, because at the same time I can see: RTK fix | EKF status OK (as shown in the attached image).

Has anyone seen similar behavior or has insight into what could cause **GPS1** to be reported as “not healthy”?

 ![gps](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/3X/3/0/3038e9f8f162f70252d4aeed283d60e4e750ffbb.jpeg)

The settings I am currently using are:  
serial 4: ama2 | serial5: ama 3 | GPS1\_type: NMEA | GPS2\_type: uBox | gps\_primary: firstGPS | GPS1\_rate\_ms : 5Hz (ms) | serial 4\_baud: 115200 | serial 5\_baud: 57600 | SR0\_posiont: 10Hz

From the GPS external: NMEA with GGA, GSA, RMC | baud rate 115200

Thanks for any insights