Did your "mobile mechanic" run a successful forced regen while monitoring parameters after replacing the sensors?
Engine derate in 3 hrs, seek service immediately!
Discussion in 'Kenworth Forum' started by kestrel1, Aug 26, 2020.
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Accidental Trucker and daf105paccar Thank this.
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Yes. Did full dpf analysis and regen analysis and all came back good. He did say bevies it could be electrical issue, maybe harness is shorting out somewhere between sensor and ecm. My main mechanic is out of town so was just hoping it’ll be ok to run for now. It’s never actually gone into derate. Just flashes on then off. Same with CEL. On and off. It’s an intermittent issue
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Post stored codes in ECM again.
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1881 and 1883
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If those 2 codes returned after replacing sensors and regen, you have problems in the wiring going to differential pressure sensor. Start at sensor and begin working your way backwards while praying that the problem is closer to the start of your search than the end of your search.
Andreybanyuk, D.Tibbitt, Accidental Trucker and 4 others Thank this. -
Thanks. I’m going to have to get this sorted ASAP. It’s gonna be a ##### to solve I’d say. Fingers crossed
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Get a new mechanic. This should not take "thousands and thousands" It will take someone with more knowledge than "your mechanic" to be fixed efficiently and cost effective.
spsauerland Thanks this. -
Last edited by a moderator: Sep 23, 2020
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Looks like you have several different sensors reporting out of range values at the same time. My first suspicion would be a bad wiring harness. One of those messages even says there is a short.
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