I have a 99 E-350 psd. I received OBD II program and hardware from E-bay. Today I hook it up and got this reading. Category: power train. Name: P1396, P1395. Description: Glow Plug M. I take this to mean that I have two bad Glow plugs. This program came with no instruction

 

Thanks to guys for the information.

OBD II Diagnostic Trouble Code (DTC) Definitions

http://www.actron.com/code_lookup/index.php