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Have active code spn 3711 fmi 31 and spn 3719 fmi 0. 2009…

Customer Question
Have active code spn...

Have active code spn 3711 fmi 31 and spn 3719 fmi 0. 2009 western star with a cat c15. will only run for 1 minute. engine light and engine stop lights are on.

Mechanic's Assistant: What is the complete model and serial number of your machine?

2009 western star 4900 series cat c15 adem a4 / acert epa 07. vin - 5kkjalav19pak3029

Submitted: 4 years ago.Category: Medium and Heavy Trucks
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Answered in 7 minutes by:
7/24/2018
Technician: Cat Man, Cat Engine Expert replied 4 years ago
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
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Thanks for asking your question. I will try and help you out.
Code 3719 is a high spot load code.
Code 3711-31 is a low dpf inlet temp. This means it can’t get high enough temp to clear out the soot. Two things cause this.
Plugged filter fittings going to the ard or a bad ard head.
Please reply back if you need more help or have more questions. I am happy to assist.
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Customer reply replied 4 years ago
How do I check the filter fittings? Is the ARD head behind the turbo, with a spark plug in it?
Technician: Cat Man, Cat Engine Expert replied 4 years ago
I Always replace the fittings first. If problem continues. I then replace the ard head.
Yes that’s the location.
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Customer reply replied 4 years ago
If I replace the fittings, then how do I force a regeneration?
Technician: Cat Man, Cat Engine Expert replied 4 years ago
Do you have a regen switch on the dash?
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Technician: Cat Man, Cat Engine Expert replied 4 years ago
You should be able to use that to force a regen.
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