Hi all,
Happy holidays. I've been flying the Mavic for over a year now and just saw this symbol yesterday (see photos) while flying. It looks like a vertical obstacle avoidance logo with a circle and line thru it and "N/A" next to it. I've seen similar on the top of the pbone screen when obstacle avoidance is disabled or on ground, but never at the bottom during flight. Wasn't able to find anything via searches. Does anyone know what this is? Thx in advance!

Downwards vision sensor not available.  I'm not sure why your getting it.  But it's a downwards vision sensor warning.  Are you sure that it is not turned off in settings?

Also Try cleaning the sensor se if it might help.

Hi there, are you using an Android device? If yes, this symbol might appear when the downward sensor is disabled. Please check if you have enabled it. If this is not your case, please try to calibrate the vision system via DJI Assistant 2 and restart the drone. See if it helps.