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ErrorLib — Industrial Fault Code Library

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0008

Fatal Internal Software Error

Allen-Bradley · MicroLogix 1400 Programmable Controllers

What does 0008 mean?

An unexpected and critical software error has occurred within the controller's operating system or runtime environment. This typically halts controller operation and may require reinitialization of data.

Common Causes

  • Unexpected internal software error.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Cycle power on your controller.

  2. 2

    Redownload your program and reinitialize any necessary data.

  3. 3

    Review and implement proper grounding guidelines and use surge suppressors as described in the controller User Manual.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

-1Output Error-2Overlap Error-3Undefined Accel/Decel
Source: Allen-Bradley MicroLogix 1400 Programmable Controllers
Open Manual (Page 402)Search more codes in this manual