Fixing your EGR/DPF Problems...

[cesaravila77]

Hi,
I am having problems with a 2014 VOLVO ISX15. The unit went into derate mode because the it ran out of DEF fluid. We had the unit towed back to our yard. The first thing I noticed is that the DEF gauge would read empty even after we top off the tank. I replaced the sending unit of the DEF with no change. Wondering if you had this problem in the past.