ℹ
info HP
Status Initializing...
Printer is initializing — normal startup process in progress.
? What Causes This
Printer is powering on or performing startup routines.
ⓘ What This Means
No action required. Wait for the printer to complete initialization.
Source: page 8 of the official manual
From the manual
This error code appears in:
HP Color Laserjet Pro M255 M256 Printer