Canon Error E07 — What It Means & How to Fix It
Updated July 2026 · Independent PrinterCare USA support guide
Canon printers display error E07 when the printer's firmware detects that an ink cartridge has been installed in a slot that does not match its color or type. This is one of the most common errors we see, and it almost always has a simple mechanical fix that takes less than five minutes. The good news is that your printer and cartridges are almost certainly fine—they just need to be seated correctly.
This error can happen after you replace a cartridge, move your printer, or if someone else has used it and didn't install cartridges properly. The printer will refuse to print or scan until the cartridges are in their correct positions, which is actually a safety feature to prevent ink system damage.
How to fix it — step by step
- Power off the printer completely. Turn off the printer using the power button on the device itself, not just by unplugging it. Wait thirty seconds for all internal circuits to discharge. This ensures the printer will perform a fresh cartridge detection when you power it back on.
- Open the cartridge access door. Locate the cartridge access panel on your Canon printer, usually on the right side or front of the device depending on your model. Gently press the release latch and swing the door open fully. Wait a few seconds for the carriage to move to the accessible position if it does not do so automatically.
- Photograph the cartridge positions before removal. Take a clear photo of your cartridge slots with your phone before removing anything. This shows you exactly which color goes in each position and prevents confusion. Most Canon printers have four slots labeled with color names: Black, Cyan, Magenta, and Yellow, though some models have additional slots for photo inks.
- Remove each cartridge one at a time. Press down on the cartridge you want to remove until you hear a click, which releases the retention mechanism. The cartridge will pop up slightly. Gently pull it straight toward you and set it aside on a clean paper towel. Repeat for each cartridge, removing them in any order.
- Inspect cartridges for color labels and damage. Look at the top and side of each cartridge for printed color labels. Check that the label color matches the slot color and that you have not confused cartridges. Examine the cartridge contact pins at the bottom for any bent, corroded, or damaged metal contacts. If a cartridge looks defective, set it aside and note the color so you can replace it later.
- Verify slot labels match cartridge colors. Using your photo from step three and the printer manual, confirm that each slot is labeled with the correct color name. Some users accidentally install cartridges in adjacent slots due to poor lighting or unclear labeling. Cross-reference your cartridge colors against the slots marked on the printer housing itself.
- Reinstall cartridges in correct positions with firm pressure. Insert the first cartridge into its correct slot at a slight downward angle, then push straight in firmly until you feel it snap into place with an audible click. Do not force it; if resistance is high, remove it and check the alignment. Repeat for each remaining cartridge, ensuring each one clicks securely before moving to the next.
- Power on and test the printer. Close the cartridge access door completely and press the power button. Wait for the printer to fully boot and cycle through its calibration routine, which may take thirty to sixty seconds. Once the display shows ready or online status with no error code, the E07 error has been resolved and you can resume printing.
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Frequently asked questions
What if the error E07 comes back after I reinstall the cartridges correctly?
If error E07 persists, one of your cartridges may have faulty contact pins or internal electronics. Try swapping cartridges between slots to see if the error moves to a different slot—if it does, that cartridge is defective and needs replacement. If the error stays in the same slot, the printer slot itself may have a contact issue and you should contact a technician.
Can I ignore error E07 and keep printing?
No, most Canon printers will not print or scan while error E07 is displayed. This is by design to prevent ink from mixing or spraying onto internal components. You must fix the cartridge positions before the printer will function again.
Are all Canon cartridge slots the same, or do they have different shapes?
All Canon cartridge slots are the same physical shape and size, which is why it is easy to install a cartridge in the wrong position by mistake. The printer identifies cartridge color electronically through contact pins, not through mechanical shape coding. Always check the color label on the cartridge and match it to the color label on the slot.
Should I clean the cartridge contact pins before reinstalling them?
Yes, if you notice discoloration or debris on the gold contact pins at the bottom of a cartridge, gently wipe them with a lint-free cloth or coffee filter. Dirty contacts can cause communication errors even when the cartridge is in the correct position. Use only dry cloth; do not apply liquids or solvents to the pins.