Medium and Heavy Trucks
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Hi My name is***** will be glad to help. That fault is for the EGR valve not responding. Click this link for further info on this fault. Let me know if you need more help
Code s 146/7 — occurs if actual EGR rate during EGR mode operation is less than it
should be. This fault will lock boost mode operation and illuminate the CEL for the
remainder of the ignition cycle.
Possible plugged or faulty EGR valve
I posted a link for more information that you can click on to open the file.
Hi, Did you get this resolved?