168A is a support code documented for Canon PIXMA TR4720, Canon PIXMA TR4722. A cartridge is not seated correctly or is incompatible.
What this support code means
A cartridge is not seated correctly or is incompatible.
Applies to: Canon PIXMA TR4720, Canon PIXMA TR4722. Do not reuse the same code on an unrelated model.
What to try, in order
- Check correct cartridge position, remove only protective packing, then reinstall and lock it.
- Verify the exact cartridge code if recognition still fails.
After each step, repeat the action that produced the message. If it clears, you can stop.
Does this call for a replacement?
The message alone does not justify buying a part. Complete the documented installation or cleaning checks first; consider the exact OEM number only if the manufacturer procedure then calls for it.
Part pages contain paid Amazon search links only after the diagnostic context; no seller or retail item is verified by this error code.
When to stop
Stop if the instructed check does not apply, access requires disassembly, or the error persists after the documented steps.
Do not buy a part from the code alone. Check the exact model and manufacturer's part list if a replacement is actually required.
Models covered by this source
Official sources
These links identify the source and its scope. Check the manufacturer page again before changing a printer setting or buying a part.
- Canon — TR4700 series support code 168A Checked 2026-11-01; official full page
Useful next steps
Found a mismatch? Request a correction with the public source URL and exact model, without passwords or full serial numbers.