My Phantom 4 the video signal disappears! The status at the top of the screen reads No Image Transmission Signal. Then I get the error message Air Encoder Error (0x800020). I've tried rebooting all three devices multiple times with no luck of bringing the image signal back and all firmware is current. Now i dowgraded its showing error air encoder error (0x2800020). What could be the reason ? Your help is much appericiated.   I dont have memory card on that. Do i need to have this istalled ?its really giving a head ache ..

Please someone guide me through.

Try post 7 suggestion in the linked to thread,

air encoder error (0x2800020)

You know...I have the same problem...I just updated everything and my Phantom 4 standard did the exact same thing.
I did all the uninstall  and reinstall etc with no luck although it did fly once after the update said it was 100 done.  As soon as I put in another battery to fly some
more...…...Air encoder error...….
I'm off warranty so I decide to make a quick check of local repair.
found Seattledrone repair.  I set up a visit to drop off my drone and problem solved.  $55'oo   
Rather them post a bunch of threads blab.....I just let someone else take care of it.
This drone isn't the only poker I have in the fire so there's plenty of things for me to do until I get it back
on Tuesday       
Worse things happen at sea.
So we'll  

i don't understand

Hi. We apologize for the inconvenience. There is an error with the camera coaxial cable (MIPI), or it is not connected properly. We highly suggest to send the unit back for repair.

I was just saying that I didn't have time to mess with this issue any more.  I have a 500 size electric Helicopter I'm also working on.
Sometime it's easier to just have someone else take care of the problem.
I'm rebuilding a heli with a fly bar sys so I have to deal with my gyro settings and expos on that rig so I went chump and
took my Phantom in for upgrade firmware problem.
My P-4 is out of warranty so time wise.....this made sense for me.
If you contact some of these repair shops they will walk you through the fix.
This is the first real problem I have had with my drone and paying $50.oo was an easy chaise.

I am in UK and i dont have any service center near by.. And i dont know who is the authorized repair center ?

Now it says no SD card ...

Error code 0x02a803 ?

Good Evening All,
Very happy about DJI service. Complaint about the issue and got an email from DJI to send it to factory/ Service centre in Netherland and followed by UPS courier pick up email.
Sent the Courier on 6th of September, checked the tracking and it has reached on Tuesday, Got fixed on thursday 13th Sep and sent back to me VIA UPS  on friday and got it hand on 18th Sep.
Very happy and lightning fast service. Thank you DJI .. Cant wait to fly tomorrow in the field..

Hi everybody,
I am wondering why DJI does not have a solution for this problem when so many clients have the same topic. Also no solution to be found on the web...

DJI Wanda Posted at 2018-9-2 09:57
Hi. We apologize for the inconvenience. There is an error with the camera coaxial cable (MIPI), or it is not connected properly. We highly suggest to send the unit back for repair.

Hi,wanda, do you have a picture of that part please? cause I have same problem on my P4,, can part 34 flex cable ser repair it? thanks

Eliasr1 Posted at 2018-10-26 20:23
Hi,wanda, do you have a picture of that part please? cause I have same problem on my P4,, can part 34 flex cable ser repair it? thanks

same problem!! and with software I didn´t repair it....

Eliasr1 Posted at 2018-10-26 20:23
Hi,wanda, do you have a picture of that part please? cause I have same problem on my P4,, can part 34 flex cable ser repair it? thanks

same problem!! and with software I didn´t repair it....

Is this hardware or software problem,becouse  i m not in possibility to  send p4 to the official service, can someone tell me which part to replace to fix this problem best regard Kala

Hello, how do you fixed the drone ? I have the same problem: air encoder error (0x2800020) + it says no SD card + update failed at 55%

I have had this problem for over a year did firmware update and there it went. I had Always wanted a dji and I am disappointed in the fact that so many people have this problem and nothing has been done. I'm out of warranty so I a unit sitting here that I cant fully use. Dji should be responsible because there f.w. caused this problem.  I have nothing good to say at this point. I will sit here and wait to see if a fix comes along.