Cause
Paper size may not be compatible with automatic duplex printing.
What to Do
The paper sizes supported for automatic duplex printing are A4, Letter, A5, and B5. Make sure that the size of paper loaded in the printer and the paper size settings are correct.
After removing the paper being printed, load the paper of the correct size and press the printer's OK button.
Resume printing from the front of the next sheet. The page where the error occurred and its back page are not printed.
To cancel printing, press the printer's Stop button.
If your product issue was not resolved after following the steps above, or if you require additional help, please create or log in to your Canon Account to see your technical support options.
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