Canon Printer Error 1686 usually indicates that one or more ink cartridges have run out of ink or the printer cannot accurately detect the remaining ink level. This error commonly appears on Canon PIXMA printers and prevents printing until the issue is resolved. While the message may seem alarming, it can often be fixed in just a few minutes without professional assistance.

In this guide, you’ll learn what Canon Printer Error 1686 means, its common causes, how to fix it, how to override the error when appropriate, and tips to prevent it from happening again.

What Does Canon Printer Error 1686 Mean?

Canon Printer Error 1686 is an ink-related warning. It appears when the printer determines that an ink cartridge has reached a low or empty state.

Depending on your Canon printer model, you may see messages such as the following:

• Ink has run out.
• The following ink may have run out.
• Cannot detect remaining ink level.
• Replace the ink cartridge.

Most Canon printers stop printing to protect the print head from damage caused by operating without sufficient ink.

Common Causes of Canon Printer Error 1686

Several factors can trigger this error.

Empty Ink Cartridge

The most common reason is that one or more ink cartridges are empty.

Incorrect Cartridge Installation

If the cartridge is not properly seated, the printer may fail to detect it correctly.

Non-Genuine or Incompatible Cartridge

Compatible or refilled cartridges sometimes fail to communicate properly with the printer.

Dirty Cartridge Contacts

Dust, ink residue, or fingerprints on the electrical contacts can interrupt communication.

Firmware or Software Issues

Occasionally, outdated printer firmware or corrupted drivers can contribute to cartridge detection problems.

How to Fix Canon Printer Error 1686

Follow these troubleshooting steps in order.

Check Which Cartridge Is Empty

Review the printer’s display or your computer’s error message to identify the affected cartridge.

If multiple cartridges are low, replace each one as needed.

Replace the Empty Ink Cartridge

Install a new cartridge that matches your Canon printer model.

To replace the cartridge:

1. Turn on the printer.
2. Open the cartridge access cover.
3. Wait for the carriage to stop moving.
4. Remove the empty cartridge.
5. Install the new cartridge until it clicks into place.
6. Close the cover.
7. Allow the printer to initialize.

After installation, print a test page.

Reinstall the ink cartridge.

If the cartridge still has ink:

• Remove it carefully.
• Inspect for damaged plastic or leaks.
• Reinstall it securely.
• Restart the printer.

Sometimes the printer simply fails to detect a loosely installed cartridge.

Clean the Cartridge Contacts

Dirty contacts can interfere with cartridge recognition.

To clean them:

• Remove the cartridge.
• Use a lint-free cloth.
• Lightly wipe the gold electrical contacts.
• Avoid touching the contacts with your fingers.
• Allow them to dry before reinstalling.

Restart the printer.

A simple restart can refresh cartridge detection.

Steps:

1. Turn off the printer.
2. Unplug the power cable.
3. Wait 60 seconds.
4. Plug it back in.
5. Turn the printer on.

Check whether the error has disappeared.

How to Override Canon Printer Error 1686

Some Canon printers allow you to continue printing even after detecting an empty cartridge.

To override the warning:

1. Press and hold the Stop, Resume, or Cancel button.
2. Hold it for approximately 5 to 10 seconds.
3. Release the button.
4. The printer may disable ink level monitoring for that cartridge.

Keep in mind that printing with an empty cartridge may damage the print head. Only use this option temporarily if you know there is still usable ink remaining.

What If the Error Still Appears?

If replacing the cartridge does not solve the problem, try the following.

Update the printer driver.

Download and install the latest Canon printer driver for your operating system.

Updated drivers improve communication between the printer and your computer.

Update Printer Firmware

Firmware updates often resolve cartridge detection bugs and improve overall printer performance.

Test with a Genuine Canon Cartridge

If you’re using a compatible or refilled cartridge, install a genuine Canon cartridge to determine whether compatibility is causing the error.

Reset the printer.

Restore the printer to its default settings if other troubleshooting steps fail.

After resetting, reconnect the printer to your network and reinstall it if necessary.

How to Prevent Canon Printer Error 1686

Proper printer maintenance can reduce the likelihood of future ink errors.

Follow these best practices:

• Replace cartridges before they become completely empty.
• Use genuine or high-quality compatible cartridges.
• Print regularly to prevent ink from drying.
• Store cartridges in a cool, dry place.
• Avoid touching cartridge contacts.
• Keep the printer firmware updated.
• Clean the printer periodically.

Routine maintenance helps improve print quality and extends the life of the print head.

Common Mistakes to Avoid

Avoid these troubleshooting mistakes:

• Ignoring low ink warnings.
• Removing cartridges while the printer is operating.
• Installing the wrong cartridge model.
• Cleaning contacts with abrasive materials.
• Continuing to print with an empty cartridge for long periods.
• Mixing incompatible cartridge brands.

These actions may lead to additional printer errors or permanent print head damage.

Quick Answers

Can I print with the Canon printer error 1686?

Some Canon printers allow you to override the warning temporarily by holding the Stop or Resume button. However, this should only be done if the cartridge still contains usable ink.

Does Error 1686 always mean the cartridge is empty?

Usually, yes. However, the error can also result from poor cartridge contact, incompatible cartridges, or detection issues.

Will replacing the cartridge fix the error?

In most cases, replacing the empty cartridge immediately resolves Canon Printer Error 1686.

Frequently Asked Questions

Why does Canon Printer Error 1686 appear after replacing the cartridge?

The cartridge may not be installed correctly, the contacts may be dirty, or the cartridge may not be compatible with your printer.

Can compatible cartridges cause Error 1686?

Yes. Some third-party cartridges may not communicate properly with Canon printers, resulting in detection errors.

Is it safe to override the error?

Only temporarily. Printing without sufficient ink may overheat and permanently damage the print head.

Do I need to replace every cartridge?

No. Replace only the cartridge identified by the printer unless multiple cartridges are empty.

Can outdated firmware cause this error?

Although uncommon, outdated firmware can occasionally contribute to cartridge recognition problems. Updating the firmware may help resolve persistent issues.

Conclusion

Canon Printer Error 1686 is primarily an ink cartridge detection or low-ink warning designed to protect your printer from print head damage. In most situations, replacing the empty cartridge, reinstalling it correctly, cleaning the cartridge contacts, or restarting the printer resolves the issue quickly. If the error persists, updating your printer’s drivers and firmware or testing with a genuine Canon cartridge can help identify the underlying cause. By following regular maintenance practices and replacing cartridges before they run completely dry, you can minimize the chances of encountering Canon Printer Error 1686 in the future.