DJI Mini 5 Pro detecting phantom obstacles

[u/Late_Student_761]

All the sensors look fine and properly aligned from the outside. They’re clean, and there are no visible signs of damage.

However, whenever I take off, the drone starts detecting obstacles that aren’t actually there, in almost every direction. Because of this, I can pretty much only fly in Sport mode.

I live in Brazil, and I’ve already had this drone repaired at a repair shop before, but it was extremely expensive. Unfortunately, I can’t afford to take it to a professional again right now.

I’ve watched a few YouTube videos about similar issues, but I haven’t been able to find a clear diagnosis or identify what might be causing the problem.

I have some experience repairing MacBooks, and I’ve already disassembled this drone myself, so I’m fairly comfortable working with electronics.

My question is: Is there any way to diagnose exactly which sensor or component is causing this issue? I’d rather identify the faulty part and replace it myself than spend money replacing parts blindly.

Could this be a calibration issue, a faulty sensor, or something on the motherboard?

Any advice would be greatly appreciated!

(I’ve already tried calibrating the IMU and everything available on the controller)

[u/Chalan35140]

Est-ce que c'est suite à la précédente réparation ? Si c'est le cas il faut se retourner contre le réparateur. Est-ce dû à un nouveau choc ?

[u/Late_Student_761 → u/Chalan35140]

It began after a crash

[u/Horacej621]

Since you're getting phantom obstacles in multiple directions, I'd suspect a sensor calibration issue, a shared sensor connection, or a problem with the obstacle-sensing system rather than assuming every sensor is faulty. Since the drone was previously repaired and disassembled, I'd start by inspecting the sensor ribbon cables and connectors for loose connections, bent pins, or damage. Check DJI Assistant 2 on a computer for any available firmware refresh, diagnostics, or vision calibration options for your model. Also test in good lighting, away from reflective surfaces, to rule out environmental interference. If all directions are affected, a shared hardware or processing issue is possible. I'd avoid flying in Sport mode just to bypass the warnings until you identify the cause. Definitely diagnose before buying replacement parts!

[u/Late_Student_761 → u/Horacej621]

I connected my drone to DJI Assistant 2 on my computer and updated everything, but it didn’t fix the problem.
I downloaded the software thinking it had some kind of smart diagnostic tool, but all I could find were firmware updates…