Originally Posted by
mrrattle
try pulling both pressure sensors out of the exhaust, just let em hang there in the breeze, now go for a drive and see if you can get a regen out of it.
this is the pressure sensors tubes, not the temperature sensors. sensors are wires, pressure tubes are stainless pipes.
if the soot mass in the dpf goes past about 48 grams the computer freaks out so to speak and wont regen, i have seen as high as 97 grams soot mass.
the more soot mass in the dpf the longer you have to drive.
the dpf costs about 2200 bucks to replace and is covered under warranty. so you could just take back to dealer and complain really loud, let em know what a piece of crap the epa forced down your throught. then ask em why the light duty truck does not have a regen switch like the medium duty.