GCAT9110
Advanced Member
I pulled my 2015 37TS out of storage yesterday, its only been sitting a week
. I had drained everything and put droplights in the wet bay anticipating some record lows. The low outside ambient was 14 Degrees and I bet the enclosed storage may have visited something <28? Anyway, on the run back to my shop I had the yellow engine light illuminate about 8 minutes into the drive, not the yellow check engine light. Obviously, indicting an emissions fault. Bluefire pulled up a 3216-20-Aftertreatment 1 intake NOx drifted high, this is the one just off the turbo. I did hammer it a tad leaving the storage facility. After recording the fault I cleared the code with the Bluefire software and the light and code have not returned but I have not put the coach back on the road yet. Anyone ever run across this 3216-20 fault. I don't think it has anything to do with the extreme cold and I hate just to pop a sensor on it. I will most likely plug in one of our laptops and look at NOx sensor activity and make the call after I look at the data.