How to fix error 0xc18a0401, oxc18a0401 on HP printers

Solution 1:

• Press and hold the "*" key. Press the "#" key and release both keys. Display should say "Enter Special Key Combo"
• Press and release in sequence the "1", "2" and "3" buttons. Display should say "Support" and display the FW rev (something like R0631R).
• Press and release the right arrow button until the display says "System Configuration Menu".
• Press and release the "OK" button. Display should say "Hardware failure status". If not there already, Arrow Key over to "Hardware failure status",
  Press and release the "OK" button. Display should say "Hardware failure status: Clear. Press OK to clear".
• Press and release the "OK" Button. Message changes to "Hardware failure status Cleared. Press Cancel to continue".
• Press and release the "CANCEL" button as many times as necessary, until the "Welcome to Photosmart Express" screen appears, or, the "Ink System Failure" screen appears. Do not try to print at this stage.
• Using the Power Button, turn the unit OFF and unplug the power cable from back of the printer and wall outlet.
• Wait 30 seconds for the power to get discharged and then plug the power cable into the wall outlet first and then into the back of the printer.
• Turn the unit on. The printer may display message "Use Power button to shutdown the printer" followed by "Press OK to continue". 
• Press OK. The Printer will start the "One time ink initialization process". Allow this process to complete and do not interrupt. 
• Once the initialization process is complete, the printer will print out a Diagnostic Page. 

Solution 2:

• Unplug the power from behind the printer.
• Wait for 60 seconds. 
• Hold down the “print photo” and “cancel” at the same time. You should be able to see it with a blank screen for several seconds.
• It's done
• Try again and again if at first it doesnt work.

Solution 3:

• Unplug the all-in-one from power.
• Wait 30 seconds.
• Plug in the power only.
• Repeat steps 2-4 two more times.
• On the third time after plugging the unit into power check the functionality. 

Solution 4:

• Unplug the power cord from the back of the HP All-in-One.
• Wait for the unit to go to the sleep mode. Wait for 60 seconds.
• Press and hold Print Photos & Photo Fix buttons simultaneously on the control panel; keep them pressed and reconnect the power cord to the All-in-One.
• Continue pressing the buttons until the display goes blank or Reset shows on the control panel display.

Solution 5:

• See Ink System Failure on HP Photosmart C6180