HP PCL/PJL reference - Printer Job Language Technical Reference Manual

EN PJL Status Codes D-21
Y = Jam Location Tray
0 Non-specific jam
1 Paper feed 1, paper late jam
2 Paper feed 2, paper late jam
3 Fuser output, paper late jam
4 Fuser output, paper stopped jam
5 Face down output, paper late jam
6 Face down output, paper stopped jam
7 2-Sided turn around, paper late jam
8 2-Sided turn around, paper stopped jam
9 2-Sided path, paper late jam
10 2-Sided path, paper stopped jam
11 External input device paper jam
12 External output device paper jam
13 Fuser accordion jam
14 Fuser accordion jam
15 Printer could not auto eject paper