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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 5172
Experience:  Owner at DJ Wilson
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I have code on the Volvo 2013 .code # 5394 it is the only

Customer Question

Hi I have code on the Volvo 2013 .code # 5394 it is the only code ,
JA: What's the make/model/year of your truck? Engine type?
Customer: Volvo 780 425 HP D13,year 2013
JA: Are you fixing your truck yourself? What have you tried so far?
Customer: I check the sensor on the exhaust was clean
JA: Anything else you want the truck mechanic to know before I connect you?
Customer: the only code is 5394 and FMI 17,SCR Performance Low engine in derate ,5 Mph Limit
Submitted: 8 months ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 8 months ago.

Hi my name is***** with me while i pull up your code

Expert:  Daniel Wilson replied 8 months ago.

5394 FMI 17

Data valid but below normal operating



Least severe level

Dosing failure

Aftertreatment Diesel Exhaust Fluid (DEF) dosing amount too low or DEF quality

MIL illuminated

NOx emissions

too high

Possible Causes:

NOx sensor

SCR catalyst malfunction

EGR mass flow failure

SCR inlet temperature


Customer: replied 8 months ago.
Your answer is the same answer I found online. It was not helpful whatsoever, and did not assist me in the problem I am having.
Expert:  Daniel Wilson replied 8 months ago.

We can post back and forth as needed. The answer is the definition of the fault and the potential causes to trigger the fault. did you expect that the code definition would be different in my manual than other places on the web? I see you visually looked at the sensor and it was clean. That does not mean the sensor is good. It is possible the sensor is bad. Also which sensor are you referring to? Nox sensor? SCR inlet sensor? EGR mass flow? Did you inspect the catalyst for problems? Let me know

Expert:  Daniel Wilson replied 8 months ago.

Do you have DDDL diagnostic software on a laptop?

Expert:  Daniel Wilson replied 8 months ago.

If not there is no way of watching live data to see which sensors are not working properly so without doing that you will be buying these sensors hoping one will fix the problem and if not you might be finally replacing the catalyst and also possibly reflashing/updating the ECM software after.

Expert:  Daniel Wilson replied 7 months ago.

Hi, Did you get this resolved? If so please take a moment to rate my service as that is how the site credits for my time helping on the site.

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