Epson Printer Error Code E-51 — What It Means & How to Fix It

What Does This Error Mean?

Error E-51 means the print head is not functioning correctly. The print head sprays ink onto the paper and is a critical component. This error may require a print head cleaning, replacement, or professional service.

Affected Models

Epson WorkForce WF-7710
Epson WorkForce WF-7720
Epson Expression Photo XP-8600
Epson WorkForce Pro WF-4730
Epson Expression XP-6100

Common Causes

The print head nozzles are severely clogged from dried ink
The print head has overheated from an extended print session
The print head is not seated correctly in the carriage
One or more ink cartridges ran completely dry and the head was damaged from dry firing
The print head has failed due to age or heavy use

How to Fix It

Run a print head cleaning cycle from your printer's control panel or the Epson printer software.

On the printer: go to Setup > Maintenance > Head Cleaning. On the computer: use Epson Status Monitor.
After cleaning, print a nozzle check pattern to see if any colors are missing.

A nozzle check pattern shows exactly which nozzles are clogged or blocked.
If lines are missing, run a second cleaning cycle. Do not run more than two back-to-back.

Running too many cleaning cycles fills the waste ink pad faster and can stress the print head.
Turn the printer off and leave it for 30 minutes. Dried ink can sometimes loosen after sitting.

Then try another nozzle check. Some clogs clear on their own with time.
If E-51 persists after cleaning attempts, check if your model has a user-replaceable print head.

On models with a removable head, replacement is the most effective fix.

When to Call a Professional

If multiple cleaning cycles do not fix E-51, the print head may have failed. Print head replacement on Epson printers costs $30 to $80 for the part. On some WorkForce models, the print head is user-replaceable.

Frequently Asked Questions

How do I know if my Epson print head has actually failed?

If multiple cleaning cycles produce no improvement in the nozzle check pattern, the head has likely failed. You may also see visible damage to the print head — burn marks or cracked nozzle plate. A failed head will not recover from cleaning — replacement is necessary.

Can I replace the Epson print head myself?

On many WorkForce and Expression models, yes. The print head is designed to be user-replaceable. Check your printer's manual or Epson's support site for instructions. Make sure you buy the correct replacement head for your exact model.

How can I prevent print head failure in the future?

Print at least one page per week to keep the nozzles from drying out. Always use genuine Epson ink — third-party ink can clog nozzles faster. Do not turn off the printer by unplugging it — always use the power button so it caps the head properly.