Epson Printer Error 0x9d — What It Means & How to Fix It

What Does This Error Mean?

Error 0x9d is a critical internal hardware fault on Epson printers. The printer has detected an unrecoverable error in its internal systems — typically related to the main board, print head driver circuit, or internal firmware. The printer will display this error code and refuse to print. A full power reset is always worth trying first, but if the error persists, this typically requires professional service or printer replacement.

Affected Models

Epson WorkForce WF-7710
Epson WorkForce WF-7720
Epson WorkForce WF-4720
Epson WorkForce WF-4730
Epson EcoTank ET-4760
Epson WorkForce WF-3733

Common Causes

Main circuit board has developed an internal fault from age or electrical stress
Print head driver circuit has failed — often related to a short in the print head itself
Ink has leaked internally and reached the main board causing component damage
A power surge has damaged sensitive electronics on the main board
Overheating of internal components after extended heavy use without adequate ventilation

How to Fix It

Turn the printer off using the power button. Unplug the power cord from the wall completely. Disconnect the USB and any network cables. Wait 10 full minutes before doing anything else.

A complete power disconnect gives the printer's electronics the best chance of recovering from a temporary fault state.
Remove all ink cartridges or ink tanks (for EcoTank models). Set them on a clean surface. Press and hold the power button for 60 seconds while the printer is still unplugged to discharge residual power.

Some users report 0x9d clearing after a full cartridge removal and deep discharge reset — though success is not guaranteed and the error often returns.
Reconnect the power cord only (leave cables and cartridges out). Power the printer on and observe whether the error appears immediately or only after cartridges are installed.

If the error appears before cartridges are even installed, the fault is almost certainly in the main board or firmware — not in a cartridge.
Check Epson's support website (epson.com/support) for any known service programs or advisories for your specific printer model and this error code. Some critical board faults have been covered by out-of-warranty service programs.

Have your printer's serial number ready — service programs are often restricted to specific serial number ranges.
If no service program applies and the printer is out of warranty, obtain a repair estimate from an Epson-authorized service center. Compare the estimate against the current retail price of a replacement model before deciding.

If the repair cost is more than 50% of the cost of a new printer, replacement is usually the better financial decision.

When to Call a Professional

Error 0x9d almost always indicates a hardware failure that cannot be resolved by the user. Contact Epson support at epson.com with your printer's model number and serial number. If the printer is within warranty, Epson will repair or replace it. For out-of-warranty printers, compare repair quotes against the cost of a new printer — main board replacement often costs more than a budget replacement unit.

Frequently Asked Questions

Is there any way to fix 0x9d myself?

The power reset steps above are worth trying — they occasionally clear the error if the fault was caused by a one-time electrical event. However, if the error persists through multiple resets, there is no reliable DIY repair. The internal board components that fail are not user-serviceable.

Can a bad ink cartridge cause 0x9d?

A faulty cartridge with an internal short can sometimes stress the print head driver circuit, contributing to board damage. However, 0x9d itself is typically a board-level fault, not a cartridge issue. Removing cartridges before a reset is worth trying, but replacing cartridges alone rarely fixes this error.

How long do Epson printers typically last before this type of error?

Most Epson home and office printers last 3 to 7 years under normal use. Heavy-use models in small businesses can develop board faults earlier. Epson EcoTank models tend to have a longer usable lifespan due to lower cartridge swap frequency and reduced mechanical stress.