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Air Encoder Error (0x800020) - Possible Fix

BD0G

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Well just received the weirdest Error Message in the DJI GO 4 Application.

I was just out at the park and have had the Mavic Pro Combo for about 24 hours.
Firmware is current. No calibrations done as there is no prompt to do so.

Was ready to fly and powered up. No Image transmission on screen and Little Red Triangle with an Error Message of Air Encoder Error (0x800020).


Forward Vision Sensors were also not operable. Gimbal was in disconnected mode as well from recollection. I was about to kick the Mavic Pro down the street and remembered that the only change I made last night (when it was working correctly) was to swap out the DJI Included 16 Gigabyte Micro SD card for a faster larger Micro SD card made by Sandisk. Its the 64 Gig Sandisk Extreme Plus seen here




So I figured that somehow this Micro SD card was not compatable. I swapped back in the provided 16 Gig Micro SD card and power cycled the Mavic Pro and Controller. BOOM! Resolved!

So this is good as I don't have to send it in for RMA repair after less than a day and bad in that I cannot use my preferred Micro SD card to save larger capacity video and stills. Looks like I am off to shop for a more compatible 64 Gig SD card.

Posted here to potentially save someone the frustration and run around trying to fix thier Mavic Pro.

This is a totally reproducible phenomenon. The moment I swap the San Disk Extreme 64 Gig in the error is presented again.
 
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chazzm

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I use this same card, all I did to make it work was to copied the files from the 16gig original card to this one installed it and it works great!! Didn't even have to format it in the. App either..


Sent from my iPad using MavicPilots
 

BD0G

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Weird! I may have a faulty Micro SD card and that caused the issue although I have read on the DJI forum where there were incompatible micro SD cards that caused this same error.
 

Teqjax

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I just wanted to thank you for this post. Apparently this issue isn't exclusive to the Mavic model. I have a phantom 4 that I just received for Christmas and I happened to be using this exact same memory card when I started having issues at the beach this morning. Swapped back to the 16g card that came with it, and it feels like Christmas again. Do you mind if I ask what card you went with?

Thanks again!
 

Slider

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Hey all - Just got a Mavic Pro Fly More on Friday, was running into the exact same error. Very inconsistent video transmission, video would simply cut out.

Per this thread, I swapped the SD card to a 32GB Sandisk and at first it worked well. However, the same error reappeared during the first flight once the Mavic got around 500 ft away from the RC. Spoke with DJI support and they've asked me to send the drone back. Bummer.

Not sure why the SD card swap didn't work as well on my end.
 

DoctorRennie

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You rock man! I just had the same problem and you helped me fix it!

- Scott
 

GMG

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@BD0G, thanks for posting this solution. I've been gnashing my teeth trying to find a fix and dreading an RMA. This fixed that issue, now just got to sort out a gimbal problem...
 

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