Error messages are usually specific to individual makers and machine models. Since you didn't bother to tell us either teh make or the mdoel of th emachine we cannot help you.
You can, however, help yourself. Go, find the manual that came with the machine and read that. If you don't have the manual, find the make and model of the machine in question and search the makers website for the manual.
You could also do a Google search for the make and model butrt add the words "error PE" to your search string.
X, May 2015
