Hi @vrr20, welcome to the forum 
I’ve moved your comment to its own post, because the thread you posted it in was specifically for the Pixhawk 4, which you do not have.
I’m a bit confused by this. The Pixhawk has an MC5611 barometer has part of its internal sensor suite, but that should appear in SCALED_PRESSURE - SCALED_PRESSURE2 is normally used for an external barometer (like our Bar30 (MS5837-30BA) or Bar100 (Keller 7LD-PA)).
Could you please clarify
- Are you running ArduSub on your Pixhawk (and if so, which version)?
- Do you have an external barometer? If so, is it actually using an MS5611 sensor, or something else?
- Are your sensors fully plugged in, and does the issue persist when you reboot your Pixhawk? In this similar post from a while ago the problem ended up resolving itself after similar checks.