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Cummins Hit with 1.7Billion for Emissions Defeat Devices
Trucks affected are 2013 - 2023 Ram Cummins trucks. Here we go... Link
Forum Discussion
My guess is that Cummins did what got VW in trouble, that is detect whether the truck was on the road or on the test dyno and then adjust the engine settings accordingly. It is a lot more challenging to measure emissions on the highway than on the test dyno so it is rarely done. It could be that a programmer put in the code for that without many people knowing, figuring that no one would notice. That is what happened at VW Computer code can be hard to read and I am sure that there is quite a lot of for that engine. So nobody else noticed until they went looking for it.
