one of our personal tow trucks, throwing dpf light, had dpf cleaned/cooked with no avail. trying regen and it wont read "regen active" on cluster. Have all criterias met (Engine Temp, Parking Brake, NOT touching gas/brake pedal,Automatic Trans In Park) the regen light flashes about 3 times and then goes out... am i missing something?? dont do much trucks any help would be appreciated

Pardeep Lal
Technician
Inman Auto Care
Colonia, New Jersey, USA