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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8421
Experience:  I am ASE Master Truck Certified.
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2007 cat C9 code Sid 3 fmi 5 ... How can I fix it myself?

Customer Question

2007 cat C9 code Sid 3 fmi 5 ... How can I fix it myself?
Submitted: 10 months ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 10 months ago.

Thanks for asking your question. I will try and help you out.

Code 3-5 is defined and a fault with the number 3 injector circuit. It's most likely a faulty injector or a failure in the wiring harness that connects to the number 3 injector.

Please reply back if you need more help or have more questions. I am happy to assist.

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