Solved: Help me diagnose this focusing motor problem on my... - Canon Community
faulty lens 28-105mm - Canon Community
Err 01 Communications between the camera and lens is faulty. Clean the lens contacts Quick Fix - YouTube
Canon Error 1 Problem - How to fix faulty lens communication Canon camera & lens. - YouTube
Thomas Camera Services Ltd - #Error01 on a Canon EOS 650D. This fault can be caused by either the body or the lens. For example: lens contact issues on the body or
Error 01 , communication between camera and lens faulty. Clean lens contact” | DIGITAL CANON repair blog