freightliner cascadia DD15 engine DEF heater line problem spn 4357 FMI 5 electronic failure

[@juancarlosesparza6841]

Muchas gracias Francisco !

[@gwalker1652]

👍🏼 very informative. Thank you.

[@paulb.5497]

I have this code on and off for a week. Will this derate the engine? Prefer to work on it when I get home and not on the road. Thank you for the information Francisco. Looks like an easy fix.

[@TruckerRo]

Mines did the same thing, that's actually the first problem I've ever had with my freightliner DD15 then I had a J19 code

[@fernandobarria1116]

💪💪

[@tonyruiz2046]

⭐️👍⭐️