The Trump EPA announced today they are removing the DEF sensor for diesel engines in yet another move to provide financial relief for farmers and truckers. Specifically, the EPA is stating the removal of the urea quality sensor (UQS). This sensor has been a constant irritant for diesel engine owners leading to reduced performance on various occasions. Instead, the EPA supports a more reliable NOx sensor to achieve the same results. What is a DEF UQS sensor? Back in 2013 for on-highway diesels, 2014 for nonroad applications, the EPA laid out guidance on how automakers could meet its adjustable parameter […] (read full article...)