Schneider Electric E040

Brand: Schneider ElectricModel: PLC (Modicon M221 / M241 / M262)Error code: E040

What the Fault Means

Firmware update error

Likely causes

  • Power lost during firmware update; wrong firmware file

Solution and Safe First Checks

  1. Re-apply firmware using EcoStruxure Firmware Update tool; verify PLC model

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

Related Schneider Electric error codes

Source: the Zeror.ai industrial fault database and Schneider Electric technical documentation. This page is for information; on critical systems follow the manufacturer's manual and authorised service.