Why Is My Canon Printer Not Printing? The Six Most Likely Causes

Canon PIXMA printers are some of the most reliable inkjets you can buy, but when they decide to stop printing, they don't always tell you why. Customers call us all the time with the same vague symptom — "the printer just won't print" — and the cause is usually one of a handful of things. Here's how to work through it.

1. Check for a Blinking Error Light

Most PIXMAs don't have a full-color screen, so they communicate problems through blinking lights. Count the blinks on the alarm light and look up the pattern in Canon's official PIXMA support pages. Two blinks usually means "paper out," four blinks means "ink cartridge problem," seven blinks means "printhead error." Knowing the code saves you ten minutes of guessing.

2. Run a Nozzle Check and Deep Cleaning

If pages are coming out blank or with horizontal banding, the printhead nozzles are clogged. From Canon's printer software (or the Maintenance tab on the printer itself), run a Nozzle Check. You'll get a printed grid showing which colors are firing. If gaps show up, run Cleaning once, print another nozzle check, and only escalate to Deep Cleaning if the first round doesn't work. Deep cleaning uses a lot of ink — don't do it casually.

If you've gone through three cleaning cycles with no improvement, soak the printhead. Pull it out (most PIXMAs let you remove the entire printhead by lifting a green lever), set the bottom in a shallow dish of distilled water for 10 minutes, dry it gently with a lint-free cloth, and reinstall. This rescues a surprising number of "dead" PIXMAs.

3. Make Sure the Tape Is Off New Cartridges

Canon cartridges — PG-243, CL-244, PGI-250, CLI-251, and all the rest — ship with a small orange protective cap and sometimes a strip of clear tape. If you've just installed a new cartridge and nothing is printing, pull the cartridge back out and confirm every piece of orange and tape has been removed. This is the single most common "new cartridge won't print" issue we see.

4. Confirm You're Not Out of Ink

Canon's ink monitor isn't always reliable, especially with refilled or compatible cartridges. To check ink level on the printer itself, hold down the Stop button until the alarm light blinks four times, then release — this prints an ink-level report on most PIXMAs. If a tank is empty, replace it. Browse our model-specific guides like Canon PIXMA MG2520, Canon PIXMA TS3122, Canon PIXMA TR4527, or the full Canon ink cartridge collection to find your exact replacement.

5. The Printer Says "Cartridge Not Recognized"

This usually means the contacts on the cartridge or printhead are dirty. Pop the cartridge out and look at the small copper or gold contacts on its side — if you see ink residue or fingerprints, wipe them with a dry coffee filter or microfiber cloth. Don't use paper towels (they shed lint) and don't use alcohol on the chip itself. Reinstall the cartridge firmly until it clicks.

If you're using a remanufactured or compatible cartridge and the printer still won't recognize it after a recent firmware update, that's Canon's authentication chip rejecting it. Reach out to whoever sold it to you — if you got it from us, we'll replace it with one programmed against current firmware.

6. The Print Queue Is Stuck

If your computer shows the document as "sending" forever but the printer never moves, you've got a stuck queue. On Windows, open Devices > Printers & scanners, click your Canon, hit "Open print queue," then cancel everything. On macOS, do the same from System Settings > Printers & Scanners. Restart the printer and your computer, then try again with a single test page.

7. Wireless PIXMAs: Confirm the Connection

If your Canon connects over Wi-Fi, print a network settings page from the printer (usually Setup > Device settings > LAN settings > Print LAN details) and confirm it's on the same network as your computer. If the printer dropped off Wi-Fi, hold the Wi-Fi button on the front panel for a few seconds until it starts flashing, then use the Canon PRINT app to reconnect.

When the Printhead Is Genuinely Dead

If you've cleaned, soaked, swapped cartridges, and reset the network, and the printer still won't put ink on paper, the printhead itself may have failed. On most PIXMAs (especially the all-in-one MG and TS series), the printhead is a user-replaceable part — you can order it from Canon. Whether it's worth replacing depends on the model: for an entry-level $60 printer, probably not; for a higher-end PIXMA Pro, absolutely.

The Best Habit for Keeping Your Canon Printing

Print at least one color page every two weeks. PIXMA nozzles dry out faster than HP or Brother nozzles — it's the trade-off for sharper photos. A weekly habit of printing a single color page costs you about a penny in ink and saves you from doing deep cleaning cycles that cost a dollar each.