Jez

Camera has started to display and error message when turned on, turn off the camera and turn on again. It’s been doing it for a while, which might have taken a couple of cycles but now it won’t go away. I am assuming it has something to do with the lense as it doesn’t do it with it off the camera. Any ideas how to fix this? Tried taking off the lense and refitting, I don’t have a second lense to try, and removing battery / memory card, cleaning contacts etc.