Canon Printer Error Code E25 — What It Means & How to Fix It

What Does This Error Mean?

Error E25 means the print head has overheated or the temperature sensor is not working correctly. Canon inkjet print heads generate heat when firing ink droplets. If the head gets too hot, the printer shuts down to prevent damage.

Affected Models

Canon PIXMA Pro9000
Canon PIXMA Pro9500
Canon PIXMA Pro-10
Canon PIXMA iP7220
Canon PIXMA iP8720

Common Causes

Printing large, ink-heavy documents caused the print head to overheat
The printer is in a hot room or in direct sunlight, raising the operating temperature
The print head temperature sensor has developed a fault
The printer's ventilation is blocked and internal heat is not escaping
A long printing session without a break allowed the head to accumulate heat

How to Fix It

Stop printing immediately. Turn the printer off and let it cool down for at least 15 minutes.

Do not just pause the print job — power the printer completely off.
Check the room temperature. Printers operate best between 50°F and 90°F (10°C to 32°C).

Move the printer to a cooler location if the room is warm.
Check that all ventilation openings on the printer are unobstructed.

Do not place the printer against a wall or inside a tight cabinet where heat cannot escape.
After cooling, power the printer back on. Try printing a smaller, less ink-intensive document.

If the error does not return on small jobs, the printer simply needs breaks between large print runs.
If E25 appears immediately even after cooling, the temperature sensor may have failed.

Contact Canon support or a service center — sensor replacement is not a DIY repair.

When to Call a Professional

If E25 appears after short print jobs or in a cool room, the temperature sensor may have failed. Sensor replacement requires disassembly and is a job for a Canon service center. For older Pro series printers, check whether repair cost is worth it.

Frequently Asked Questions

How often does Canon print head overheating happen?

It is not common under normal home use. It is more likely in hot environments or during very long printing sessions without pausing. Professional photographers printing large batches of high-quality photos see this more often.

Will letting the printer cool down fix the error permanently?

If the root cause is overheating, yes — cooling down will fix it. If the sensor is faulty, the error will return even in cool conditions. Monitor whether E25 only happens after extended printing or at any time.

Can I add a fan or cooling to prevent E25?

You should not modify the printer externally. Instead, take regular breaks during large print jobs. For very high-volume photo printing, consider a printer designed for professional workloads.