79 Service Error Code when trying to print colour both side of page

[Irene2018]

Hi, 

Earlier in December I had help from this forum (a HP employee) resolving my trouble in printing with teh 79 Service Error Code showing up. The problem has recurred again, this time whenever I tried to print on both sides of the page, in colour. When I printed in B/W it was fine. At both times, documensts were PDF format.  I tried the solution offered last time again - unplugged everything, took out cartridges, waited, reinstall cartriges, downloaded and installed latest firmware....still the same error code. 

Any suggestions please to solve this problem?

Thank you very much. 

[sandytechy20]

@Irene2018

Welcome to HP forums, I see that you are getting 79 Service Error Code on the printer and you have tried multiple troubleshooting steps.

I am sending you a private message. Please check the mailbox icon at the top-right corner of this screen.

I hope this helps resolve this issue completely.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.