Hello there,
My case seems to be the same. I have a Nikon D5200 and it shows the same metering error message after I dropped it. It only works in totally manual mode, without having any information about the exposure before the shot.
I think I am not willing to spend about €250 on fixing it, so I really appreciate your help or information. As soon as I get any additional information or a make the decision to fix it by myself, I will also share the photos and the information with you.
I am afraid this could take me about three months, since I quite busy with my work now, but please let's stay tuned.
Cheers,
Roberto