Diesel HD Heavy Duty Truck Car Code Reader Scanner OBD2 Diagnostic DPF Regen ABS. 4, The DPF soot level is higher than 80% full; Need to be regen. The NexLink NL102PLUS HEAVY DUTY diagnostic scanner from NEXAS supports all heavy duty trucks in compliance with standard protocols ( J1587,J1939 and J1708), and also 10 modes of OBD tests for a complete diagnosis and battery power monitor of passenger cars & light duty vehicles.