When I use my Snap On MT2500 scanner I enter it as a 2005 Nissan Sentra with a 2.5, I can monitor all engine relays, minus the LPG relay, I can see any P0xxx codes, and I can clear a DTC. You could probably access it in non-enhanced mode or Global OBD 2, non manufacture specific. What scan tool are you using?
The Platinum 2 Forklifts with on-board diagnostics did not come out until 2007 I believe, but even on these you can get additional information with a scanner, but the scanner is only useful for engine information or e codes, not F codes