ErrorCodeDoctor
Canon Printer (PIXMA) error codes
Select a Canon printer (pixma) error code to see what it means, common causes, and how to fix it.
Error Codes
21
7500 / 7600 / 7700 / 7800
An internal printer error occurred — power cycle or contact a qualified technician service
$0–$250
hard
22
8300
The cassette is not installed correctly
$0
easy
23
9500
A print head error has occurred — the print head may not be compatible
$30–$80
medium
24
B20B
A printer error has occurred — power cycle and contact a qualified technician if it persists
$0–$250
medium