2013 D13 spn 5394 fmi17 codes

NOx codes If you idle a lot will trigger those codes. Most likely went into a NOx evaluation and after the regen it was OK. Extended idling will emit a lot of unburnt hydrocarbons, If you have a a lot of soot or getting close to a dpf cleaning then it will affect it. What's your mileage?

 

I have been experiencing the same thing with my 2011 d13, I replaced the box sensors, the egr valve, egr cooler, the turbo, baked the dpf, Def pump ,and warmer, I do idle some, not excessive. It have been fighting these codes the last year and volvo can't solve it, I like the truck alot, but pretty much at wits end with this. I hope you can figure why it's throwing codes.

 

Base on my own experience that kind of problem need a extensive road test (1 hour) with the lap top on the knees to monitor many after treatment components and figure out what wrong.
5394 is telling you DEF system is not fonctionning propelly but the EGR system is often the cause.
5246 is the derate code because the ECM derate the engine because the DEF system is not fonctionning like expected since a certain amount of time.
In that situation there is many possibility and it's not always the same one.
First you need to make sure the EGR system is fonctionning propelly. . . .to do it during the road test i'm looking closely at the EGR temp (very often the answer is there) the DEF system need the EGR system to work ,the DEF system alone cannot take care of the all NOX (PPM) generate by the engine.
Note: The EGR valve position in the lap top is only a calculation because there is no position sensor on it then the lap top can show you a 95 % open position and on the engine the egr valve can be stuck close, it's the reason why i'm looking also at the EGR temp to figure out if it make sense.
Up to now the cause found for a problem like yours are:
EGR Cooler(heat tranfer problem)
EGR valve (stuck close)
EGR diff pressure sensor and delta P tube(Plugged up)
Nox sensors (Inlet / Outlet)(Incorrect given information)
DEF dosing valve (incorrect flow)
DOC (on top of DPF)(Melt inside or plugged up)
SCR (Poisonning)

Hope this can help.
Ben

 

Please guys help me (( I have the same problem
Fault codes : spn 5394 fmi 17
Spn 5246 fmi 16
Spn 4094 fmi 18
Truck is 2012 Volvo

 

Base on my previous e-mail you need a good diagnostic first to make you are replacing the failed parts(only).
Because for the codes that you have it's not always the same cause. . . . . .i suggest to you to look closely at your egr system first even though the code(5394,4094) direct you on the DEF system.
Ben

 

How much does it cost ?