1800
Canon Printer
Severity: MinorWhat Does This Error Mean?
Error 1800 on a Canon printer means an ink cartridge is not installed correctly or is not being recognized. The printer detected that one or more cartridges are not properly seated in the holder. This is usually a quick fix — open the printer and reseat the cartridges.
Affected Models
- Canon PIXMA iP2820
- Canon PIXMA iP2850
- Canon PIXMA MG2400 Series
- Canon PIXMA MG2500 Series
- Canon PIXMA E400 Series
Common Causes
- An ink cartridge was not pushed down firmly enough and did not click into place
- The ink cartridge was installed in the wrong slot (black in color slot or vice versa)
- A cartridge was removed during a print job and not replaced before printing resumed
- The ink cartridge contacts are dirty and the printer cannot read the cartridge chip
- An incompatible or counterfeit cartridge is installed that the printer does not recognize
How to Fix It
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Press the printer's Stop or Cancel button to clear any active print job. Then open the printer's front access cover.
The carriage will automatically move to the center of the printer for easy cartridge access.
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Press down on each cartridge to release it from its slot, then pull it out. Check that you have the correct cartridge in each slot.
Canon PIXMA entry-level models typically use one black (PG-series) and one color (CL-series) cartridge. The slots are usually labeled.
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Reinstall each cartridge firmly. Push straight down until you hear and feel a definite click.
A properly seated cartridge sits flush in its slot. If one sits higher than the other, it is not fully clicked in.
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Close the front cover fully. The printer will perform a brief initialization check.
Watch the indicator lights or display — they should stabilize to a normal ready state within 30 seconds.
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If error 1800 persists, remove the cartridge and gently wipe the copper contacts with a dry lint-free cloth, then reinstall.
Dirty contacts are a common cause of cartridge recognition failures, especially with refilled or stored cartridges.
When to Call a Professional
Error 1800 is almost always a self-service fix involving the cartridge installation. If the error persists with a brand new genuine Canon cartridge properly installed, the cartridge contact pins inside the printer may be bent or damaged. A technician can inspect and repair the contact pins.
Frequently Asked Questions
Can I print with one cartridge if the other is empty?
No — most Canon PIXMA entry-level models require both cartridges to be present and recognized before printing. This applies even if you only want to print in black. Some models offer a workaround by holding the Stop button for several seconds — check your specific model's manual.
Why does error 1800 show up with a brand new cartridge?
Occasionally a factory-fresh cartridge has a defective chip or contaminated contacts. Try cleaning the cartridge contacts with a dry cloth. If it still fails, it is a defective cartridge — return it to the store for an exchange.
Is error 1800 the same as error 1401?
They are similar but slightly different. Error 1401 means the printer detects no cartridge at all in the slot. Error 1800 typically means a cartridge is present but not properly seated or recognized. The fix steps are essentially the same — reseat and clean the cartridge contacts.