Canon Error 5B00 — What It Means & How to Fix It
Updated August 2026 · Independent PrinterCare USA support guide
The Canon 5B00 error is frustrating because your printer stops working even though there is nothing visibly wrong with it. This error appears on the display panel and prevents printing, scanning, or copying until the waste ink absorber counter is reset back to zero.
The waste ink absorber is a sponge-like component inside your Canon printer that collects excess ink during cleaning cycles and color calibration. After months or years of use, this absorber becomes saturated, and the printer's internal counter triggers the 5B00 error as a safety feature to prevent ink overflow and internal damage.
How to fix it — step by step
- Check your printer model compatibility. Verify that you have a Canon inkjet printer model that supports software-based service counter resets. Most Canon PIXMA and imagePROGRAF series printers from the last ten years are compatible. Check your printer's manual or the Canon support website by searching your specific model number to confirm reset options are available.
- Download the Canon Service Tool Kit software. Visit the official Canon support website and search for your printer model along with the term Service Tool. Download the appropriate software file for either Windows 11 or macOS depending on your computer. Save the downloaded file to a folder you can easily locate, such as your Downloads folder.
- Connect your printer to your computer with a USB cable. Turn off your Canon printer completely and wait ten seconds. Connect a USB cable from your printer's USB port directly to an available USB port on your Windows or Mac computer. Turn the printer back on and wait for your computer to recognize the device, which typically takes thirty seconds to one minute.
- Install and run the Service Tool software. Double-click the downloaded Service Tool file to begin installation. Follow the on-screen prompts and accept the terms and conditions when asked. Once installation completes, launch the Service Tool application from your Start menu on Windows or Applications folder on macOS.
- Select your printer and navigate to the waste ink reset function. In the Service Tool window, select your connected Canon printer from the device list. Look for a menu option labeled Service Adjustment, Maintenance, or Waste Ink Counter. Click on the option to expand it and locate the waste ink absorber reset or service counter reset selection.
- Execute the waste ink counter reset. Click the Reset button or Execute button next to the waste ink counter option. A confirmation dialog will appear asking you to verify the reset action. Select Yes or Continue to proceed with the reset, which typically completes in five to fifteen seconds.
- Verify the error has been cleared. After the reset completes, disconnect the USB cable from your printer. Turn off your printer and turn it back on again to allow the system to fully restart. Check the printer display panel to confirm that the 5B00 error message no longer appears.
- Perform a test print to confirm normal operation. Send a test print job from your computer to your Canon printer to verify that printing functions are working normally. If the printer accepts the job and produces output without errors, the service counter reset was successful. You may now dispose of the Service Tool software or keep it for future use.
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Frequently asked questions
Is it safe to use third-party reset software on my Canon printer?
Yes, the Canon Service Tool Kit is widely recognized as legitimate software that does not damage your printer or void the warranty. The software simply resets the internal counter to zero without modifying any other printer components or settings. Thousands of small businesses and home users safely use this method each year without issues.
Can I replace the waste ink absorber myself instead of doing a reset?
Replacing the waste ink absorber is possible on some Canon models but requires disassembling internal components and is not recommended for most users. The part costs between sixty and one hundred twenty dollars, plus the labor or risk of causing additional damage during installation. Resetting the service counter is the most cost-effective and practical solution for the 5B00 error.
How often will the 5B00 error come back after I reset it?
The error typically reappears after another six to twenty-four months of normal printer use, depending on how frequently you print and use color cleaning cycles. Resetting the counter does not wear out your printer or cause harm, so you can perform resets multiple times throughout the printer's lifespan. Some users reset every twelve months as preventive maintenance.
What if the Service Tool software does not recognize my printer?
Verify that the USB cable is securely connected to both the printer and computer, and check that your printer is powered on. Try unplugging the USB cable for thirty seconds and reconnecting it while the Service Tool application is running. If the printer still does not appear, check your computer's device manager to confirm the printer is properly installed as a USB device, or contact Canon support for assistance.