Engine derate in 3 hrs, seek service immediately!

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

 

1881 and 1883

 

Thanks. I’m going to have to get this sorted ASAP. It’s gonna be a ##### to solve I’d say. Fingers crossed

 

This problem is starting to get to me. Mechanic has found there’s a short, (as we knew) but is trying to work way back but there’s so much wiring he said this could be looking for needle in haystack and might have to just start replacing harnesses which could be thousands and thousands! I feel very frustrated and worried.

 

Just took for drive with computer plugged in. Drove up and down road fine no lights. Then I wanted to try slow turn because for some reason I used to feel it flashed the message under those conditions. As soon as I started a slow right turn, the computer indicated that the Volts dropped below 2v on the dpf differential pressure sensor and flashed that message. So we repeated this and almost every time I tried it, voltage dropped and flashed the message. Checked all connections at harnesses and untied the harness so it wasn’t tight when turning and still volt drop. Starting to look like whole harness replacement