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error HP
Error Code Amber glows across large light bar centered with flashes at edges
There is a serious printer error, and the condition will require turning off printer then on again to resolve.
? What Causes This
Critical malfunctions not covered by less severe alerts or status indicators.
✓ How to Fix It
Turn off printer completely by unplugging power cord. Wait 10 seconds before reconnection to allow system reset. Observe error codes upon restarting system.
Source: page 15 of the official manual
From the manual
This error code appears in:
HP Envy 6400E All-in-One Series Printer