E-04
Epson Printer
Severity:What Does This Error Mean?
Error E-04 on an Epson printer means there is a problem with one or more ink cartridges. The printer cannot recognize a cartridge or it is not seated correctly. Removing and reseating the cartridges is usually the first fix to try.
Affected Models
- Epson Expression XP-420
- Epson Expression XP-430
- Epson WorkForce WF-2540
- Epson WorkForce WF-2630
- Epson Stylus NX430
Common Causes
- An ink cartridge is not fully pushed into its slot
- The cartridge chip is dirty or has an ink residue smear
- An incompatible or counterfeit third-party cartridge is installed
- The cartridge chip or the printer's reader contacts are damaged
- A cartridge was installed in the wrong color slot
How to Fix It
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Open the ink cartridge access panel. Wait for the carriage to stop moving.
Never open the panel while the carriage is in motion.
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Remove all ink cartridges from the printer. Set them on a clean paper towel.
Check each cartridge to make sure it is the correct model for your printer.
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Inspect the gold chip on each cartridge. Wipe it gently with a dry lint-free cloth.
Ink smudges on the chip can prevent the printer from reading the cartridge correctly.
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Check the color slots in the printer. Make sure each cartridge goes back into the correct slot.
Epson cartridges are color-coded — cyan, magenta, yellow, and black all have different slots.
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Reinstall each cartridge firmly until it clicks. Close the panel and try printing.
If E-04 still shows, one specific cartridge is likely faulty. Try replacing them one at a time.
When to Call a Professional
If cleaning and reseating does not work, the cartridge chip reader may be damaged. Epson service can inspect and replace the chip reader contacts. This repair typically costs $50 to $90 at an authorized service center.
Frequently Asked Questions
Can third-party ink cartridges cause error E-04?
Yes, this is very common. Third-party cartridges sometimes use chips that Epson printers cannot read. Epson firmware updates sometimes specifically block non-Epson cartridge chips. Switch to genuine Epson cartridges if you keep getting E-04 with third-party ink.
I just installed a brand-new Epson cartridge and I still get E-04. Why?
New cartridges can occasionally be defective. Also, check that you removed the protective orange tape or cap from the cartridge before installing. If the tape is still on, the chip cannot make contact with the printer.
Do I need to replace all cartridges or just the one causing the error?
Usually just the one causing the error needs replacing. Epson's display or the Epson Status Monitor software will show which cartridge has the problem. You do not need to replace working cartridges.