I/O Module Failed Factory Test

What does E4-16172 mean?

An I/O bus module has been identified as not having passed its factory tests. This indicates a manufacturing defect or pre-existing hardware fault, which could lead to unreliable operation, premature failure, or incorrect functionality. This module is likely faulty out of the box.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Ensure new replacement modules are properly tested before deployment.