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+--- Thread: Def leak code 4364 fmi 18 (/showthread.php?tid=2179)
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RE: Def leak code 4364 fmi 18 - RollinCoal - 09-27-2017
(09-27-2017 )jimeneztrans84 Wrote: Yeah I'm stuck..... I replaced just about everything even rear nox sensor because I thought that was it but read good on insite and decided to still swap it. Maybe def pump?
Do you have insite?
It will give you some basic troubleshooting threw the code