How to fix Invalid Engine Code and Do Not Power Off errors caused by Engine Board connector issues
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How to fix Invalid Engine Code and Do Not Power Off errors caused by Engine Board connector issues

When turning on the printer, an ”Invalid Engine Code” with a “Do Not Power Off” message appears on the printer display.

Issue description

When turning on the printer, an ”Invalid Engine Code” with a “Do Not Power Off” message appears on the printer display.

Solution

Perform a Power‑on Reset by turning off the printer and turning it back on after a couple of seconds.
If the issue persists, search for more information related to this issue or contact support for further assistance.

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