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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

5

Flash Memory Erase Error

Wago · PFC200 PLC

What does 5 mean?

An error occurred during the process of erasing a sector of the controller's flash memory. This indicates a critical problem with the flash memory hardware or the controller's ability to manage its internal storage. This is a severe internal controller fault.

Common Causes

  • Defective flash memory sector within the controller
  • Internal controller hardware fault preventing flash erase operations
  • Power instability during critical memory erase operations

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Switch off the power to the controller.

  2. 2

    Replace the controller.

  3. 3

    Switch the power back on after replacement.

Browse all codes in this manual (23)
Verified technical data. Last updated: April 2026

Related Faults

--Internal Data Bus Communication Error (Unidentified Module)0x00090003Modbus Slave TCP Start Failed0x00090006Modbus Slave UDP Start Failed
Source: Wago PFC200 PLC
Open Manual (Page 197)Search more codes in this manual