Fix Canon Error E025: Drum Unit Error
warning Severity: warning
If your Canon printer is displaying error E025, do not worry – this is a known issue with a proven fix. This error typically indicates drum unit error that can usually be resolved without a service call. Follow the steps below to clear this error.
What Causes Canon Error E025?
This error can be triggered by one or more of the following issues:
- Drum unit has reached end of rated life
- Drum surface scratched or damaged
- Drum charge roller contaminated
- Exposure to light during drum handling
How to Fix Canon Error E025
Follow these steps in order. After each step, check whether the error has cleared before proceeding to the next one.
- Step 1: Check the drum unit page count from the printer’s supplies status page
- Step 2: If the drum is near end of life, replace it with a new drum unit
- Step 3: If replacing, handle the new drum carefully — avoid touching the green surface or exposing it to light
- Step 4: Inspect the current drum for visible scratches or damage
- Step 5: After replacement, reset the drum counter if prompted
Affected Canon Printer Models
The following Canon printer models are known to display error E025:
Related Canon Error Codes
If you are troubleshooting error E025, these related error codes may also be relevant:
- 5100 – Carriage Error
- 6000 – Paper Feed Error
- B200 – Printhead Voltage Error
- 1403 – Printhead Not Installed Correctly
- 5B00 – Waste Ink Absorber Full
Frequently Asked Questions
What does Canon error E025 mean?
Error E025 indicates a problem with the drum unit (imaging unit). The drum may be worn out, damaged, or need replacement.
How do I replace the drum on a Canon imageCLASS?
Open the front cover, pull out the toner cartridge and drum assembly, separate the toner from the drum, install the toner into the new drum, and reinsert the assembly. Follow the model-specific instructions for resetting the drum counter.
Error still not resolved?
If the steps above did not fix the error, the issue may require professional service. Contact the manufacturer support line or visit an authorized service center near you.