Many people fixed the Canon printer error B200 simply by performing a hard reset of their printer. This is because power resetting helps the printer cool down and restore everything to its proper position. Now, let’s follow the steps below to reset the printer.
Step 1. Unplug the printer from your computer and disconnect the power cable.
Step 2. Turn off your printer and open the print head bay. Then wait for about 30 minutes.
Step 3. Turn on the printer, and then wait for the print carriage to start moving to the left and let it go past halfway.
Step 4. Before print carriage reaches left-hand side (but after going halfway across) shut the cover.
Now, you can check if the Canon support code B200 disappears.
Hope this helps,