A Canon printer b200 error code indicates that the printhead is defective or the printhead temperature or voltage is abnormal. Users can troubleshoot the error by disconnecting the power cable, waiting one hour, and reconnecting the power cable.
An additional troubleshooting method for the b200 error code on a Canon printer includes cleaning the head contact pin of the carriage unit and checking the cable connection to the carriage FFC. It may also be necessary to remove the ink cartridges and reinstall them into the carriage to reset the error code. Canon printer owners can also contact Canon customer support to further troubleshoot the problem.