Help! Engine derated to 25% and won’t start!
12-25-2018, (Subject: Help! Engine derated to 25% and won’t start! ) 
Post: #9
RE: Help! Engine derated to 25% and won’t start!
I would find the DEF level sensor (its on or in DEF tank) pull it and clean it or replace it, it should clear codes. With DEF level sensor not working the truck computer does not know you filled the DEF tank, it still sees it as empty.
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 Thanks given by: Tino C


Messages In This Thread
RE: Help! Engine derated to 25% and won’t start! - imalumberjack - 12-25-2018



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