1164

RAM ERROR

Mitsubishi Electric · MELSEC System Q/L Series

What does 1164 mean?

The destruction of the data stored in the standard RAM is detected. This error occurs when an instruction is executed, indicating a potential issue with the integrity of data in the CPU's standard memory area.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Take noise reduction measures.

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Verified technical data. Last updated: March 2026

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1000CPU Down Error1036CPU Down Error1007CPU Down Error
Source: Mitsubishi Electric MELSEC System Q/L Series
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