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trdodd07 · 07-07-2016, **(Subject: ISX fault 1145 )**

Have 2 counts on this code now. I've had a regen issue, so I ran with insite connected today so I could watch and see what all is going on with the dpf while I am going down the road. While monitoring I also had the faults window open and noticed that 1145 was active with 2 counts now. It wasn't running rough or anything when that fault went active, and didn't notice any differences in performance or rough idle afterwards either.

Backtrack to last month or so, I had exhaust leaks so I replaced the gaskets and vband clamps from the flex pipe to the exht side of the turbo. While I had that all apart, I cleaned up the aftertreat. injector with carb and choke cleaner and a brass brush. I didn't have the replacement gasket, cap screws, and insulator so stuck with the old and put it back together and torqued it to spec. Things went really well after. Did a forced regen once I got everything back together and it only took about 2 to 3 min for it to reach 1000*, and the passive regen cycles went back to once every 2 or 3 days, as well as the history was looking pretty good. Toward the end of June it slipped back into the 2 or 3 times a day deal, the history is all in the 2.5 to 3 area, and when I watched it do a forced regen, it took about 20 min for it to get up to the 875 900* range. Last night I had a code for too frequent regeneration requests, and in quickserve it mentioned that if engine oil or coolant get into the dpf it will cause this.

Would an aftertreatment injector that is on it's way out, and possibly constantly leaking into the exhaust be a possible cause for the 1145 code as well as the frequent regens?
I've read a couple threads on truckers report that it when the plungers start to give out, 1145 is one indication that there is a problem with the pump.. is that correct?

I do have to add about 3/4 gal at about 10,000 mark between service intervals, but when I had the exh pipe off on the exh side of the turbo (where the aftertreatment fuel injector is at), there was no build up or thick oily residue...just soot. Also don't have any external leaks, nor is there any coming from the rear main seals. Should I be looking further down the line for any issues of this sort?