When a semi truck's diesel engine derates, it typically means the electronic control unit (ECU) has detected faults and has purposely limited the power output. A derated diesel engine is no different ...
EPA's relaxed NOx rule, as many expected, removes the warranty extension—and proposes annihilating the troublesome DEF derate ...
The news from the Environmental Protection Agency concerning aftertreatment system faults in heavy-duty diesel trucks Tuesday this week, as previously reported, urged software updates to processes for ...
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