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ErrorLib — Industrial Fault Code Library

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1415

CONTROL-BUS ERR.

Mitsubishi Electric · MELSEC System Q/L Series

What does 1415 mean?

An error is detected on the system bus. This indicates a communication or integrity issue within the system's internal data highway. It can also signify a fault of the main or extension base unit.

Common Causes

  • An error is detected on the system bus.
  • Fault of the main or extension base unit was detected.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reset the CPU module and RUN it again. If the same error is displayed again, the intelligent function module, CPU module or base unit is faulty.

Browse all codes in this manual (53)
Verified technical data. Last updated: April 2026

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1000CPU Down Error1001CPU Down Error with Device Access Issue1002CPU Down Error
Source: Mitsubishi Electric MELSEC System Q/L Series
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