Toshiba e studio 212 copier. Gives error code e03. Paper has been cleared and no particle inside, all sensor in place. Still gives error e03. What to do?

Search carefully onto the fuser cover for the actuator for exit sensor.
There is a spring that moves the actuator into normal position when the paper has passed. If it seems the spring is out from the actuator it will think there is still a paper jam. The best bet would be to call a service company to come out and make repairs if you are unable to get this spring back into place. After resetting the spring into the correct location, restart the machine and see if the problem continues. If it works and then goes into error mode again, it is likely this spring and or senor will need to be replaced.
Good luck.