I have error code OXB8000508.

[lrj451]

I have an error code OXB8000508.  All of the lights are flashing.  When I turn the printer off and turn it back on the error code is gone & the printer works OK.

[Flower_Bud]

@lrj451

Thank you for posting on HP Forums,

Flower_Bud is at your service.

As I understand, your printer is giving an error message and lights are flashing, 

No worries, as I'll be glad to help you, that said, I'll need a few more details to dissect your concern & provide an accurate solution:

When was the last time it worked fine?

Were there any hardware/software changes made?

Are you able to move the carriage?

Let's try these steps to resolve the issue: 

Reset the printer:

• With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet.
• Remove USB cable, if present.
• Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.
• Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord (This is important) and then plug back the power cord to the printer.
• Turn on the printer and wait till warm-up period finishes and the printer is idle.

Firmware Update: Follow steps from the link: https://hp.care/2rwXUxq

If the issue still persists, please perform a reset: 

I'm sending out a Private message with the reset instructions,

Please check your Private message icon on the upper right corner of your HP Forums profile

Next, to your profile Name, you should see a little blue envelope, please click on it or simply click on this link: https://hp.care/2D8O0Ev