"Flash: Def Control Unit (DCU) Updates Customers must experience a Malfunction Indicator Lamp (MIL)...
Ram technical service bulletin 08-085-25 for 2025 Ram 2500.
- Bulletin number
- 08-085-25
- Component
- Electrical system
- Summary
- "Flash: Def Control Unit (DCU) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P218F-00 - Reductant No Flow Detected. ● P249E-00 - Closed Loop SCR Reductant Injection Control At Limit - Flow Too High. Customers may also comment on the following: ● Reduced acceleration from turbo REPAIR SUMMARY: This bulletin involves inspecting and possibly updating the DCU with the latest available software."
Owners of these vehicles have filed 40 complaints in the electrical category.
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