The best way for troubleshooting this error is to reset the ink absorber to 0%. You can follow the given steps for resetting the ink absorber:
Download the Canon printer service tool from the internet
Install the setup on your device
Now open the tool and check whether all the buttons and functions are enabled or not
If not, then you should enable all the functions and buttons
If the buttons are greyed out that means your printer has crashed or all the printer is not connected to your PC
Search for the Ink Absorber Counter option
Search for Counter value option
Set the counter value to 0%
Now click on the Set button
You will receive a confirmation message saying A function has been finished on your screen. If you get the error message; your printer is not in service mode. Close the printer and restart your device and then try to resolve the error.
Run your printer on service mode
Running the printer on service mode can also troubleshoot your Canon G2000 5B00 error. You can follow the given steps for running the printer on service mode:
Press the Stop button
Turn off your Canon printer
Hold and press the power button of your Canon printer
Wait for about 4-5 seconds until the blue light glows
Now press the Stop button for 6 times. When you press the button, each time the color of the bulb changes. After pressing the button 6 times, the bulb glows blue.
Release the Power button
The blue light will start flashing. Wait for about 30-40 seconds until the blue light gets stable. Now your printer is running in service mode. Connect the printer to the computer and check whether your error 5B00 Canon G2000 gets fixed or not.
I hope these steps will be useful to resolve Canon printer error G2000 successfully.