I have Error Code OXC4EB827FHWLMICC12 C

[DaisyYoung]

The Error Code on my printer came up following a power cut. I have tried unplugging and resetting with no joy.

My OS is Mac OS Sequoia 15.5

Please can you help resolve this? thank you

[VikramTheGreat · Accepted solution]

Hi @DaisyYoung,

Welcome to the HP Support Community.
 

Thank you for posting your query. I will be glad to help you.

Thanks for your patience. The error code OXC4EB827FHWLMICC12 C on your HP ENVY 4500 e-All-in-One Printer, especially after a power cut, typically points to a firmware or hardware initialization failure, often related to the printhead or carriage system.
 

Here’s how to troubleshoot it:

1. Perform a Hard Reset

• Turn off the printer.
• Unplug the power cord from the printer and the wall.
• Wait 60 seconds.
• Press and hold the Power button for 15 seconds (while unplugged).
• Plug the power cord directly into a wall outlet (not a surge protector).
• Turn the printer back on.

2. Check for Paper or Carriage Obstructions

• Open the ink access door.
• Gently move the carriage (ink cartridge holder) left and right.
• Remove any paper scraps or debris.
• Ensure the cartridges are properly seated.

3. Remove and Reinsert Ink Cartridges

• With the printer on, open the cartridge access door.
• Remove both cartridges.
• Clean the copper contacts with a lint-free cloth slightly dampened with distilled water.
• Let them dry for 5 minutes, then reinsert.

4. Update Firmware (if accessible)

If the printer turns on without the error:

• Visit the HP support page:
  🔗 HP ENVY 4500 e-All-in-One Printer series Software and Driver Downloads | HP® Support
• Download and install the latest firmware for macOS Sequoia 15.5.

I hope this helps.

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, as it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

VikramTheGreat

HP Support

[DaisyYoung]

Thank you so much, Vikram, problem now solved--you have earned the "Great" in your user name!

With appreciation and gratitude

Daisy Young

[VikramTheGreat]

Hi @DaisyYoung,

You're very welcome—and what a kind message! I'm so glad to hear the problem is now solved. 😊
 

It was a pleasure helping you, and if anything else comes up—whether it's tech-related or just something you're curious about—I'm always here to lend a hand.

Wishing you smooth printing and a peaceful day ahead!

 Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, as it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

VikramTheGreat

HP Support