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WinePress

RVF Supporter
Joined
Nov 16, 2019
Messages
12
After 56,000 trouble free miles I was greeted with an error code of DEF quality issue. SPN 3364. Was able to bypass with the simulator.
Question, can the head unit be serviced, cleaned, or is it best to replace? Any past experiences are helpful.
Thanks
 
Could be it just needs drained and replaced with fresh.

That would be the first thing I tried if it was just a quality error code.
 

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