Test and make sure that the "Err" message is gone - now turn the camera on and take a few pictures. The "Err" message on the camera should be gone! What if you are still getting the "Err" message? Try another lens and see what happens. If nothing changes, your camera could be damaged, so call Nikon for support.. The shutter most likely froze up because of the extreme cold. After it thaws out, if it still doesn't work and keeps giving you the ERR message, then sadly it might be time for a new shutter. It costs around $350 to have Nikon replace it if that is the problem. How many total shutter actuations does it have?
The "Err" message on the Nikon D90 can be caused by various factors, ranging from lens communication errors to memory card issues and internal camera malfunctions.. Nikon D90 errors can be frustrating, but they can often be resolved with simple troubleshooting steps. By following the instructions in this guide, you can diagnose and fix common errors to get your camera back up and running.