Hey Blackie-10,
What model HP printer do you have? The error codes can have different meanings depending on the model printer.
When did this error show up?
Has it always been there or recent?
I will need a bit more information to be able to provide the best answer to your questions.
http://h30434.www3.hp.com/t5/Other-Printing-Questions/Want-Good-Answers-Ask-Good-Questions/td-p/2094
Jason