Epson Printer Error Code 0x99: How to Fix It

Q: What causes Epson error code 0x99?

Error code 0x99 on Epson printers is caused by a carriage motor encoder fault. The most common causes are a dirty or damaged encoder strip, a physical obstruction blocking the print head carriage, a dry or stiff carriage rod, a failing carriage motor, or outdated firmware that misreads encoder signals.

Q: Can I fix Epson error 0x99 myself without a technician?

Yes, in most cases you can resolve error 0x99 yourself. Cleaning the encoder strip with isopropyl alcohol and removing carriage obstructions fixes the majority of cases. Lubricating the carriage rod and updating the printer's firmware are also effective DIY solutions. If the encoder strip is physically damaged or the carriage motor has failed, you may need a technician or need to purchase a replacement part.

Q: How do I clean the encoder strip on my Epson printer?

Open the printer's access panel, locate the thin transparent plastic strip running horizontally across the full width of the printer behind the carriage. Lightly dampen a lint-free cloth or cotton swab with isopropyl alcohol (90% or higher) and gently wipe both sides of the strip along its entire length. Allow it to dry for at least 5 minutes before closing the printer and powering it on.

Q: Will error code 0x99 go away on its own?

No, error code 0x99 will not resolve on its own. It indicates a hardware-level issue with the carriage encoder system that requires physical inspection and cleaning, or in some cases a replacement part. Simply restarting the printer may temporarily clear the error, but it will return until the underlying cause — such as a dirty encoder strip or obstruction — is addressed.

Q: Is it worth repairing an Epson printer showing error 0x99, or should I replace it?

If the fix is as simple as cleaning the encoder strip or removing an obstruction, repair is absolutely worth it. If the carriage motor or encoder strip needs to be replaced, consider the age and original cost of the printer. For budget inkjet models, the cost of professional repair may approach the cost of a new printer. For higher-end Epson EcoTank or WorkForce Pro models, repair is generally worthwhile. Check if your printer is still under Epson's warranty before paying for any repair.

Abstract

Epson error code 0x99 indicates a carriage motor encoder fault, meaning the printer's internal system cannot properly read the position or movement of the print head carriage. This typically happens when the encoder strip is dirty, damaged, or misaligned, or when the carriage motor itself has failed. Left unresolved, the printer will refuse to print and may repeatedly display this error at startup.