Canon Printer Error Code 1003: How to Fix It

Q: Why does my Canon printer show error 1003 when there is paper in the tray?

Even with paper loaded, error 1003 can appear if the paper guides are not snug against the paper stack, the paper is not seated flat in the tray, the paper detection sensor is dirty or stuck, or the paper type or size in the driver settings does not match what is loaded. Try removing the paper, reinserting it neatly with the guides flush against the stack, and power cycling the printer.

Q: What paper should I use to avoid Canon error code 1003?

Use standard, dry, uncurled copy paper rated at 20 lb (75–90 gsm) for everyday printing. Avoid paper that is damp, wrinkled, or stored in humid conditions, as these conditions cause sheets to stick together and confuse the paper sensor. Do not overfill the tray — stay within the maximum fill line marked on the tray guides.

Q: Will error 1003 clear automatically once I add paper?

In many cases, yes — loading paper correctly and pressing the Resume or OK button on the printer will clear error 1003. However, if the error does not clear automatically, perform a full power cycle by unplugging the printer for 60 seconds, then plugging it back in after reloading the paper.

Q: Can a bad paper feed roller cause Canon error 1003?

Yes. Worn or glazed paper feed rollers can fail to pick up paper from the tray, causing the printer to report a paper-out condition even when paper is present. If cleaning the rollers does not help, the rollers may need to be replaced. Replacement paper feed roller kits are available for many Canon printer models.

Q: How do I prevent Canon error 1003 from happening again?

Store your paper in a cool, dry place and always fan the stack before loading. Keep the paper tray guides adjusted snugly to the paper size you use. Periodically clean the feed rollers with a damp lint-free cloth. Avoid mixing different paper sizes or types in the same tray, and always make sure your printer driver paper size setting matches the paper loaded.

Abstract

Canon printer error code 1003 means the printer has run out of paper or cannot detect paper in the paper tray. This is a medium-severity error that stops all print jobs until the issue is resolved. In most cases, simply reloading the paper tray correctly will clear the error, but sometimes a dirty or faulty paper sensor can cause this message even when paper is present.