My p3A recently gave me the ultrasonic erorr and told me to Land immediately, and after 2-3 flights i did get the Error again.

And since then even if i dont get the Error it Shows up a wrong value for hight

I fly it up and down and a couple 100 meters Back and forth, and then i hover right in Front Of me, the App Shows 20m hight and im like 1.5m above the ground.


Any idea What caused this and how to fix it?

Just to clarify, did you notice this after a firmware update or a hard landing? Are up to date with the latest firmware? Have you tried an IMU calibration and cleaning the VPS sensors?

I havent had any hard landing yet as i always Hand catch it carefully.

Ive done my FW Upgrade like 6+ weeks ago and havent had any issues Till now.

How can i Clean my vps System?

What does it do/tell you if you turn VPS off? Is the altitude still way off?