'p-header' is not a known element in PrimeNg for Angular2 application

Try to import SharedModule to solve this issue

import {ChartModule, CalendarModule, SharedModule} from 'primeng/primeng';

@NgModule({
imports: [
    CommonModule,
    FormsModule,
    CalendarModule,
    SharedModule,
],

With 2.0-RC.1 primeng changed and to and if you upgrade your version it will work.

It was version issue. Its working with version 2.