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Andy
Andy, Truck Diagnostic Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1571
Experience:  International trucks, International, Maxxforce and Cummins engines, diagnostic, electrical, Hvac and refrigeration repairs
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I have a 2011 isx Cummins motor with def and regen been

Customer Question

I have a 2011 isx Cummins motor with def and regen been having a reacuring engine light for active codes of 1141 1144 1145 1143 1142 1139 on cylinders 12456 not on 3 what might be the problem. I've had 6 &1 injectors changed numerous sensors still problem
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Andy replied 1 year ago.

Hi there . My name is***** we start with the engine serial number please?

Customer: replied 1 year ago.
79444074
Customer: replied 1 year ago.
The codes on are as follows 1 1139. 2 1141. 4 1143 5 1144. 6. 1145
Expert:  Andy replied 1 year ago.

Thanks . I will send steps to follow as soon a si get home from work today if that's OK

Customer: replied 1 year ago.
OK that will work
Expert:  Andy replied 1 year ago.

Hi there ! Home finally ! Looking up now.

Expert:  Andy replied 1 year ago.

Ok can you please resend the codes you have ! The larger number for each code is the spn number an the smaller number that goes along with it is the FMI number . So.. SPN 1139 FMI 1, and so on .... Thank you .

Customer: replied 1 year ago.
Cyl 2 1141. Cyl5. 1144. Cyl 6. 1145. Cyl 4 1143. Cyl 1 1139. That's all of them
Customer: replied 1 year ago.
Cyl 2 fmi 7. Cly 6 fmi 7. 3 fmi 7. 1 fmi 7. 4. Fmi 7
Expert:  Andy replied 1 year ago.

Oh Ok ! Thanks for clearing that up ! Here is the description of 1145 :

https://www.dropbox.com/s/c9bjhyrz2e2wee9/1145.pdf?dl=0

And here is the troubleshooting steps :

https://www.dropbox.com/s/oph1bswc25gk4vs/1145%202.pdf?dl=0

Expert:  Andy replied 1 year ago.

This is the first one to diagnose in order . Let me know if you need anything else! Thanks

Expert:  Andy replied 1 year ago.

Hi there ! Just looking for an update! Let me know if there is anything else I can do for you . Please do not forget to rate my service to you at the end of this session . Feedback is important and bonus is greatly appreciated . Thank you.

Customer: replied 1 year ago.
I took it to kenworth and they are looking at it again however they have said something about a ecm I'm not satisfied as to that yet I believe it is a fuel issuie but the keep saying their is no fuel coded I disagree to that after reading the test procedures I'll keep you in the loop thanks
Expert:  Andy replied 1 year ago.

Ok thank you for the update !

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