wet differential pressure sensor

[alborz]

Hello everyone
Today after refueling I started my truck check engine and SPN :102 FMI : 4 appeared on the dash. boost pressure

After a while of driving another check engine light with a wrench on it SPN: 1569. FMI:31 Engine derate appeared.
Manifold gauge showed below zero pressure .

While unloading the truck I tried to pull out the intake sensor but it was stocked :
truck is Peterbilt 2015

Any help will be appreciated.
Also I need to know what inside I need to buy from Ebay for this truck.
Thank you

[Mattman]

Don't know what the codes mean.

I would spray some wd40 around intake manifold sensor and gently pry it out with two flat head screwdriver.

Most folks get insite 7.62 with inline 6 adapter for a Windows 7 laptop and are happy with it.

[Rawze]

start with an thorough egr tune-up and replace all those old sensors.

[alborz]

Today I took off the differential pressure sensor to clean it up.
There was little wetness at one of the opening.
I clean it up and blew air into it.
Now I get fault code SPN 1569 MFI 31. and SPN 411 MFI 4.
ISX 15. 2350.
Any help will be appreciated.

[Waterloo]

Is the motor deleted? Did you check the two lines for obstructions? And if you did, when reinstalling you may have cracked one of those rubber lines under that protective sleeve. May want to look there. Or, you blew air into the valve and knocked something lose, may need a new one, and they is a bit pricey. Do you have a Cummins Quickserve account? If not, time to register your motor... https://quickserve.cummins.com/info/index.html

You will need your Engine Identification Number (EIN) found on the data plate on your motor.

[Mattman]

Did you plug the electrical connection back up? Haha something I would forget to do.

[hhow55]

Sounds like a new delta-p sensor, is in the near future.
Don't feel bad, if you know all the stupid thing's I've done

[alborz]

(02-24-2020 )alborz Wrote:  Today I took off the differential pressure sensor to clean it up.
There was little wetness at one of the opening.
I clean it up and blew air into it.
Now I get fault code SPN 1569 MFI 31. and SPN 411 MFI 4.
ISX 15. 2350.
Any help will be appreciated.

I don't think it's been deleted.
the light went away but wetness concerns me.

[JimT]

(02-25-2020 )alborz Wrote:  I don't think it's been deleted.
the light went away but wetness concerns me.

Could be coolant leaking from the EGR cooler. When you do an EGR tune-up you'll have the pipes disconnected and will be able to tell really easily.