2015 D13, 750k I got a CEL a couple weeks back. NOX sensor (pic below) I was on the road so I reset it a few times with the OTR reset tool. It would stay off for a day or so then come back on. Same code. This weekend I replaced the inlet NOX sensor and had DPF and DOC cleaned as well. I did not go to a Volvo dealer for this. After replacement my CEL is still on but no longer shows any faults. My reset tool will no longer turn the CEL off. I checked all modules, no active faults anywhere. Will it eventually go off or does it have a hard code locked up in it somewhere that I can’t see without dealer software? Bellow is the original DTC. to be clear, it is now cleared but CEL is still on.
Ding ding ding! You are correct, sir, thanks! About halfway through my 400 mile run today it turned itself off. I guess now I know.
would it be bad to run with a 1 box outlet nox sensor fault for too long? Is that something that will cause derate eventually? SPN 520365 FMI 5 and SPN 3238 FMI 2, looks like two different versions of the same fault, no communication from outlet nox sensor SPN 3238 FMI 2 (old) additions-revisions-or-updates-4-06-12-3-4-06-12-ddcsn SPN 520365 FMI 5 (updated guidance) https://www.google.com/url?sa=t&sou...Vaw0-HUC60OekJVPtmM5D6oao&cshid=1596121140522
Yes it will cause a derate. Consider yourself fortunate that your truck showed an issue that wants to be addressed before it gets worse. Take care of it. Now.
5 month update, code still there. me and orange light we're having a starring contest. no lie got 9.4 mpg pulling 79k gross from Wyandotte MI to St Louis MO at about ~65 degrees F ambient, cruise on 60 mph
