I'm pretty sure the warrenty states that you bring the truck back to Volvo. If the radio in my Ford Mustang goes south I don't pull up to Bose.

 

Cummins warranty their engines, not Volvo. You can take it to any truck dealer that is Cummins authorized, and they will bill Cummins for the work. Same with Eaton, any Eaton authorized dealer can do warranty work on Eaton products and then bill Eaton.

Trucks are different than cars for warranty, the vendors warranty the major components, if your Volvo break down in BFE where there is only a Pete dealer, you can get your Cummins, Cat or Detroit fixed there instead of driving/towing 400 miles to the Volvo dealer.

That is one reason Mack wasn't a good choice for OTR years ago, because with all Mack components, you had to take it to a Mack dealer, which were few and far between.

 

the isx senses the positon of the egr poppet valve. if the ecm commands the valve closed, yet the valve doesn't actually close, it will set a fault code. in the case of a 'stuck' egr valve, the engine light should remain on

 

Actually, Steve has a valid point, since it's Volvo, that's should be your first step under warranty!
I've had a Volvo with the CAT. While still under warranty, my CC quit!
I was in Syracuse NY, went to Volvo dealer, and they send me to CAT dealer, w/o even looking! :x
CAT guys(same town) real nice folks took me in, and spend 2 hours, before they find the problem.
It was a faulted brake sensor, not CAT, so, they charged me for 2 hours labor.

The only reason, that i got my money back from Volvo, was that i went to the Volvo first, and they did send me to CAT! :wink:

 

Solo, an power problem, like an EGR valve would be a Cummins problem. CC problems are different, as there are Volvo components involved in that system.

 

I agree, but what i wanted to say,that if you are not 100% sure, of what's the cause, it would be the safe bet, to start with the Volvo.