The error message "Turn power off then on or Turn the power off and on again" appears on the display if the camera detects a malfunction, such as when forcing the lens or if a foreign object is trapped in the lens mechanism. The message also appears for the SteadyShot™ function or shutter problem-related issues for interchangeable lens cameras.
Solution
Turn off the camera and turn it back on after a few seconds. If the issue still occurs, follow the steps below to power cycle the camera.
Note: Depending on your model, the power cycle steps may be different. Refer to your operating guide for details.
Manuals are posted on your model support page.
For cameras with a POWER button:
For cameras with a POWER switch:
If the issue still occurs, repair may be required.  Go to Product Repair.