How To Fix Canon Printer Error Code 306? [Quick Guide]

The Canon printer error code 306 has been encountered by many macOS users while trying to perform the print operation. If you also encounter this same error with your Canon printer, then continue reading this page to know how to fix Canon printer error code 306. Basically, the error code 306 is a communication error that occurs when your printer and the computer fail to communicate with each other. So, initially, check the connectivity status between your Canon printer and the computer to resolve this error code.

Fix Canon Error Code 306

Checking the connectivity status

For Wireless

  • If your connectivity type is Wi-Fi, then check whether your printer and the Mac computer are connected to the same wireless network. 
  • Reconnect the devices and check if this solves the issue. 
  • Make sure that no electromagnetic device is placed close to your printer and the router.
  • Similarly, make sure that your printer is within the range of the router.
  • If necessary, restart your router.

For wired or USB

  • Check whether an Ethernet cable or a USB cable is connected securely at both ends.
  • If not, unplug and reconnect the cable.
  • Make sure that you’re not using a damaged cable for connecting the devices.
  • Avoid using a USB hub for the connection.
  • After resolving the connection issue, check whether the Canon printer error code 306 is resolved. If not, re-add the Canon printer to your Mac computer.

Re-adding the Canon printer

To re-add the existing printer, first, you have to remove it from your Mac computer. After removing the printer, you can re-add it. 

Removing the Canon printer

  • Open the Apple menu.
  • Select the System Preferences option and click on Printers & Scanners.
  • Now, a dialog box titled Printers & Scanners will open.
  • In the opened dialog box, select the Canon printer that you wish to remove and click on the Minus (-) button provided below the Printers list. 
  • If prompted, type your Mac computer password to remove the selected printer.
How To Fix Canon Printer Error Code 306
Canon Printer Error Code

Re-adding the printer

  • On the Printers & Scanners dialog box, click on the Plus button.
  • Select the Default option.
  • Choose the Canon printer that you want to add and click on the Add button.

Now, check if the Canon printer error code 306 is fixed. If not, contact us. For canon printer installation, reach our experts.