How to Fix Canon PIXMA MX922 B200 Error

Quick Diagnosis

The B200 error code represents a critical printhead overheating condition or an electrical voltage malfunction within the printhead circuitry. This occurs when dried ink blocks the nozzles, causing the printhead to draw excessive current to heat the ink channels.

Technical diagnostic blueprint diagram for the Canon PIXMA MX922 showing symptoms of B200 Error.

Step-by-Step Resolution

  1. 1

    Unplug the power cord from the rear of the printer while the unit is still powered on.

  2. 2

    Press the printer's physical Power button five times to discharge any remaining electrical charge from the internal capacitors.

  3. 3

    Open the main printer cover, physically slide the printhead carriage to the center, and remove all ink cartridges.

  4. 4

    Lift the printhead locking lever, carefully lift the printhead out of the carriage, and rinse the bottom nozzles under warm distilled water until it runs clear.

  5. 5

    Allow the printhead to dry completely on a lint-free cloth for at least 24 hours, then reinstall it, lock the lever, replace the cartridges, and plug the power cord back in.

Alternative Causes & Edge Cases

  • On the Canon PIXMA Pro-100, the B200 error can indicate a power supply unit (PSU) failing to output the stable voltage required by the wider printhead.
  • On the Canon PIXMA TS9120, a B200 error can be caused by physical damage or foreign object obstruction along the carriage guide rail.