Can you keep using it?
Can you keep using it?
Contact customer support if any of these apply
- !1303 returns repeatedly on clean paper.
- !You cannot clear the jam without forcing internal parts or opening areas beyond normal user access.
What to check first
Step-by-step checks
- 1
Consumable check
Turn the printer off before pulling on jammed paper so the sheet does not tear deeper into the path.
Start with the official recovery step before moving on to parts or deeper servicing.
- 2
Consumable check
Remove any visible scraps slowly and in the direction of travel if the paper comes free cleanly.
- 3
Consumable check
Check the paper output slot and feed slot for torn pieces before restarting.
Background
What this message usually means
Canon uses support code 1303 with the same GX1000-series paper-jam family as 1300, 1304, and 1313. In practice it means a sheet is trapped or folded in the feed or output path and must be removed before printing can continue safely.
Diagnosis
Likely causes
Paper is jammed in the output or feed path.
A torn scrap is still caught in the transport path.
The printer tried to feed paper that was curled or loaded badly.
Service
When service or replacement is more likely
- -Repeated jam codes often point to feed-roller wear or a hidden scrap rather than one stray sheet.
- -Do not keep printing over a partial jam because torn fragments make the next diagnosis harder.
See also
Related codes in this family
Explore more
More Canon printer families
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Where to go next
Source notes
Canon's official 1303 page describes the code as a paper jam inside the machine at the transport unit and walks through user-visible clearing steps.
Built around Canon GX1000-series support-code guidance. Exact wording and cartridge naming can vary a little by region and model variant.
Printer error codes can vary a little by firmware, region, and exact model variant. Use this guide as a family-level starting point and stop if the next step would require disassembly or service-mode changes.
Known family variants: GX1020, GX2020, GX3020, GX4020
Last reviewed: 2026-04-12
Reference: Open reference