After 148,500 miles I believe I have filled up my particulate filter. Nothing is showing on the overhead, (yet) but I have the p 242f code. I also believe my particulate filter must be cracked because in the last two days the exhaust pipe has gotten black with soot for the first time. Can anyone tell me why I would get that code and nothing on the overhead. The truck is running fine, just went around 450 miles today and no problems. I'm wondering what to expect now. If it is cracked, it should run without any problems I hope. Anyone have any ideas? I also have a p 0516 code, battery temperature sensor circuit low, don't believe that has anything to do with the dpf.

 

Are you running the latest software update for the ECM and CCN? If not, that could be a reason. And is the p0516 stored or active. it is very, very unlikely it has anything to do with the 242f. probably just a random code

 

Likely a cracked DPF, yes. As long as your overhead isn't showing a Cat Full message, the p242f code won't derate the engine and you might even see better fuel economy so, unless you are worried about getting pulled over and getting a ticket for emissions equipment malfunctioning, I wouldn't worry about it.