Auto Focus Problem

Make sure you're using a lens that worked before on this camera.. many consumer bodies lack the built in focus motor, so you must purchase lenses that have the motor built into the lens. If it lacks a motor - no auto focus will be possible.

Remove and re-seat the lens.

Make sure that any Aperture ring on the lens barrel is set to the smallest (largest number f22) possible.

Make sure any and all Auto / Manual Focus switches are set to A or Auto.

Try taking a picture in broad daylight - or other well lit area - if the subject is very dark, the auto focus will struggle or "hunt".

Let me know if these suggestions solve your problem - good luck!

Are you using an auto-focus m4/3 lens? I have about 20 lenses for this camera and only 1 of them is an auto-focus m4/3 lens. I have an adapter so I can use my 4/3 lenses on it in auto-focus mode along with other various mounts (including cctv) that do not support auto-focus. So if you are using a non-auto-focus lens, you will need to manually focus the pictures.
If you are certain it is an auto-focus lens, are you sure you have it set to auto-focus?
What settings do you have your camera set to (aperature mostly is what I'd like to know)? Try adjusting your aperature to be small (to increase your DOF).
Also what lens are you using and what is your focal distance? It could be your lens has a larger or shallower focal distance than what you are trying to achieve (like a macro lens doesn't work that great for landscape photography or a telephoto lens doesn't work great for macro photography).
Last thought: is your lens or sensor dirty? A dirty lens can cause focusing issues if it is REALLY dirty and a dirty sensor can too (sensor is a bigger pain to clean. I strongly recommend taking it to the pros as they scratch really easily). Dirty lenses can be cleaned with a blower and a lint free cloth and rubbing alcohol if those 2 things don't clear it out.

You did not say which lens or lenses you are using, but most auto-focus lenses have a switch for selecting manual or auto-focus. First, check your camera's menu settings to make sure auto-focus is enabled and then your lens to make sure you did not accidently leave it in the manual focus position? If it is in the auto-focus position and still not taking sharp pictures, switch it to manual and see if you can get it to focus correctly. It is also possible that your auto-focus alignment is out because your camera was bumped, jolted or dropped. If realignment is necessary, you can send the camera and lens to Nikon for repair or find a knowledgeable camera repairman.

There may be a few things preventing the camera from taking a picture. I don't know the lens you are using but by chance does it have an auto/manual switch that has been switched to manual? Also make sure the lens is locked in position. The camera won't take a picture unless it has focus in the auto focus mode, this is normal. What are you trying to focus on? The camera auto focus system will search and fail to auto focus on surfaces that have little or nor contrast. For example glass, chrome, a blank wall, water, blue sky. Other conditions that auto focus fails is being to close to your subject, heavy fog, a dim lit subject, available light and night photography. Once the little green confirmation light comes on the camera has focus and will operate as it should.

It sounds like the circuit board flex has gone bad, It folds back and forth when you zoom the lens, And needs to be replaced by a repair shop and readjusted. Tony

You want to charge people for a membership to get answers from your site
but you want me to "tell you how I did it" for free. Hmmmmmm?

The lens AF mode is not working. What lens is it you are using?

It is not a camera issue but a lens issue. Try a different lens to be certain.

I assume the lens had the impact. The 18-55 lens has the built-in motors for auto-focus.
Try switching to manual focus (on the lens). If this works, the lens may not auto-focus anymore.
Try it and let me know.
cheers,

Did it ever work on this camera?
I have seen some Sigma lenses that are auto focus on canon film cameras but then when put on the digital they dont work right. If you have used it on this camera then make sure the lens is clean.sometimes dirt on the front wil make it try focusing on the dirt. Next try focusing in manual focus to make sure the focus is working. Then take the lens off and then put it back on and make sure it clicks into place.

Let me know if none of those things work. also make sure to try focus on something close and somthing far away.

let me know how it works,
Caleb

A dirty filter, front, or rear optic can cause the lens to seek