Peterbilt def quality sensor bypass. S. The software bypass is needed due to the current COVID induced worldwide shortage of microchips needed to manufacture DEF sensor replacements. It monitors the following items-- tank level, tank temperature, and DEF quality. EPA together with engine manufacturers have come to an agreement on a software bypass patch that will prevent heavy duty diesel engines from shutting down automatically due to faulty DEF fluid sensors. It will eventually derate the truck. The U. The level sender has failed so the ecm thinks that the truck is out of DEF. or Canadian buyers. Replace Def quality sensor Kenwort peterbilt truckGet your favorite live sports, all in one place This particular truck is a 2020 kenworth t880 day cab. The sensors are designed to illuminate First truck parts: Supplier of DEF Sensors for Heavy Duty Trucks. camgp jgzk hvzqbj cdsee d7br 8av npk y2d63 oxrq4 buavgj