Ram Heavy Duty Forum
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2020 Ram 5500 Diesel - SERVICE DEF SYSTEM: SEE DEALER
I’m working on a 2020 ram 5500 diesel truck. I’ve worked on several of them for a magnitude of reasons. But this is my first go around with the SERVICE DEF message. This is what I’ve done and checked so far. Checked the def injector. Wasn’t really crystallized. Cleaned anyways. Put the scanner...- 2019 Ram and Newer
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- Forum: Problems/TSBs