"I have a 2014 Chevy Cruze Diesel with a DEF Quality Poor issue."に関する回答One thing that works, drive it like 30 or 40 miles hard. Like 60 in 4th gear. Sometimes the DEF crystallizes on the injector. That worked for me a few times. However you should look at the injector and the NOX2. The last time that did not work. I replaced my NOX2 and it did not clear the code.