Epson EcoTank printers may display Error E02 with code 100016 during startup or normal use. This message is commonly associated with the scanner system rather than ink delivery or printing functions. Understanding what the printer is attempting to do at startup helps explain why this error appears and what categories of issues it can indicate.
This article provides educational context only, based strictly on what is shown and explained in the video, to support printer reuse, informed repair decisions, and reduced electronic waste.
What Happens During Scanner Startup
When an Epson EcoTank printer powers on, the scanner assembly performs a brief self-check. During this process, the scanner moves laterally and attempts to read a small white reference area. The printer relies on sensors to confirm this movement and light detection. If the expected signals are not detected, the printer cannot verify that the scanner system is functioning correctly and will stop with an error message.
Error E02 (100016) indicates that this verification process did not complete successfully
Common Categories of Causes
Based on the behavior shown in the video, the error generally falls into one of the following categories:
Physical movement issues
If the scanner assembly cannot move as expected, the printer may interpret this as a failure. Obstructions, misalignment, or resistance along the scanner’s path can interrupt the startup check.
Signal or connection issues
The scanner depends on electrical connections to deliver power and sensor data. If those connections are not functioning properly, the scanner may not respond during startup, even if no physical blockage is present.
Light detection issues
The scanner uses a light source to read a reference area. If that light is not detected, the printer cannot confirm scanner operation and may trigger the error.
Control board issues
In some cases, the main control board may fail to correctly interpret sensor signals, resulting in the same error message even when the scanner hardware itself appears intact.
Why This Matters for Reuse and Repair
Scanner-related error codes like E02 / 100016 often stop a printer that is otherwise clean and relatively new from being used. Understanding that this message is tied to scanner verification-rather than a catastrophic printer failure-can help prevent unnecessary disposal. Educational awareness supports informed troubleshooting, repair evaluation, and responsible reuse decisions.
Reducing premature printer disposal helps lower e-waste and extends the useful life of devices already in circulation.
