This was a new x15 cm245 in a boom truck with low mileage and hours and was running perfectly. Then..will watch and see. Everyone needs to know this information. There was a lot to digest so it will be a 3 part video series.
In my experience with these codes with snap shot data and regen history pressures/ soot loads that seem normal, I look at a failing dpf diff psi sensor (had one today that failed). I like to monitor soot load, dpf psi diff, and outlet psi while running a regen. Once soot load is zero or lowered and then regen completes, I like to go WOT and see if soot load starts climbing. I was thinking this might be the case with this unit since probably goes WOT when the crane is operated and the operator probably doesn’t see the CEL, (but the truck should initiate a shutdown procedure🤔) But since you’ve said this case was “outside the box” leads me to believe it’s not this simple unless someone stole the dpf since you eluded to the unit sitting unattended for months. But I can’t imagine your guy overlooking a missing dpf.
Good thinking. I actually found out some interesting data on what the newer x15 cals do. I used to be able to read engineering docs that explained all this now I am not privy to that. But I do have a couple field engineers who I bounce issues off and they open up occasionally. I believe it is important for owners and techs to understand as much as possible to save time and money and frustration. I have some interesting revelations coming up. Currently what you see is 5 months old. That gives me time to make sure I am as accurate as possible. More than once I thought I had figured it out only to find a problem chumped me ...again..LOL
It was my normal get some work done in garage early Saturday morning (shovel some snow this morning) and come in for my coffee break and watch some Engine Shop Joe. Not sure on the Cummins other than what is listed in service manual exhaust overview and haven't had any formal training in years on them, but on Paccar with identical aftertreatment hardware the soot load has basically two PID's, one based on readings from differential pressure sensor and other calculated by computer predictive modeling called the soot predictor. A regen on the Paccar with 100 % Cummins aftertreatment can be based on the soot model predictions or actual DPF delta pressure readings and it also will initiate regens based on the time since last regen occurred with some being longer and increased temps for a "deep cleaning". Regens can also be initiated to clean the SCR if outlet Nox readings drift high from ammonia buildup on SCR catalyst causing ammonia slip greater than AMOX catalyst can control. My fleet does have one T680 that has a CM230 ISX15 and I know that one regen is required every 100 engine run hours if a regen based on soot load hasn't been completed to ensure the correct operation of the aftertreatment system. As @youtubeisawesome2487 mentioned, I wonder if Active Regeneration in PTO or remote mode is not enabled in the aftertreatment features and parameters. When my fleet used to run CM871's, we disabled this feature on our blower trucks because we didn't want the temperature elevated while unloading and the engine tended to surge a lot when we did try it. Those engines tended to regen every 10 hours anyway until I overhauled them and advanced engine base timing! Look forward to following along and as always enjoy the channel and keep it up Joe!
All the required parameters were already enabled. You are on track with the way you are thinking. At times I like to "drag lessons" out a bit to make people think and come to conclusions and then to see where we all end up in our thought processes. For me knowing what is really going on so it was understood correctly was always a personal priority. My contact at cummins engineering was questioned to be sure I was thinking accurately. He shed some light on the entire event.
@@ENGINESHOPJOE As always, look forward to following the case study. Nice to have friends in the mothership to get some confirmation or greater insight to an issue. Knowledge is power and if you can't test it (and know what the results tell you), you can't properly repair it. Thanks as always, I have learned a lot and you have got me using way more of the features of Insite in my "moonlight" jobs.
