Volvo d13 Fault code 411 fmi 5

Hey guys i need some help with 411 fmi 16 exactly same problem truck running ruff it's a 2012 volvo d13.
Any ideas as what to look for?
Thanks

 

As stated. EGR differential pressure sensor is usual culprit. Could also be wiring to sensor.

 

What is the part that you changed, bcz I had same code, changed egr sensor and code is still there?

 

For those who has this code:
Cummins P411
Volvo SPN411
EGR differential pressure sensor is reading high or low data.
Possible causes of this fault code include:
A damaged EGR differential pressure sensor
A leaking low or high EGR differential pressure tube
A stuck open EGR valve

 

Clean up the EGR DIFFERENTIAL PRESSURE SENSOR

 

Clean up the EGR DIFFETENTIAL PRESSURE SENSOR SOOT IS CLOGGED UP IN THE VERY SMALL NOSTRIL IN THE VENTURI PIPE USE PAPERCLIP .

 

I tried this, didn't work, the inner tubes are narrow curved hard to aces via sensor ports, maybe better from inside, get clogged with gummy soot , have rubber seals which can be damaged if you stick a sharp pin inside. See photos , i opened one after replacing.

 

Could you advise where are pressure valve, tube or sensor located? My truck started to make exhaust whistle noises used to do before only during regen but not all the time. The code SPN 411 FMI5 was only for a little bit but then dissapeared. I had before error code SPN 5298 FMI 18

 

I cleaned the ports out with a stranded metal cable placed in a drill. It just happened that my hood latch cable was broken around the time I cleaned mine, so I clipped off a 5 inch section or so and it was perfect. If you can start the hole with a pick or something sturdy, then the wire will just follow the bends in the port until it comes out the other end. My venturi pipe is for a D16, so it is one piece without the "not a step" part.