E3-18

I/O Module Test Error

ABB · System

What does E3-18 mean?

A general test error has been reported by an I/O bus module. This indicates a failure during an internal diagnostic test, implying an issue with the module's hardware or firmware functionality. This can lead to unreliable I/O behavior or a complete module failure.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Review system logs for more specific details about the test failure.

  2. 4

    If the error persists, consider replacing the I/O module.

Source: ABB System
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