Yes, that’s what it’s looking like. Just called Cummins for harness price. $11k!!
This is outrageous
Engine derate in 3 hrs, seek service immediately!
Discussion in 'Kenworth Forum' started by kestrel1, Aug 26, 2020.
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It’s the main harness from ecm. There isn’t a branch off harness. They said I need whole harness as all we know is short is somewhere between ecm and dpf differential pressure sensor. So it could be anywhere
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The main harness from the ECM on my last truck, a DD15/Cascadia, was $408.
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That harness is around 3k. Much labor involved. Chances are the issue is closer to the sensor than the ECM. Find a mechanic who has troubleshooting ability. This issue is not that hard to remedy.
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In my limited experience, a paccar with cummins will throw that apocalyptic warning if the def gets lower than it likes, then forget it (at least on the dash) when the def is filled.
As said above, keep it full. I don't let mine drop much below half and I no longer get the warnings. I also have a mental list of def pumps that will let me fill it to the brim by pulling yhe nozzle out a bit. -
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For me 3/8 tank is minimum.
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