Flash: Radio Frequency Hub Module (RFHM) Updates Technicians may experience the following Diagnostic...
Ram technical service bulletin 08-255-25 for 2025 Ram 5500 and 2025 Ram 4500.
- Bulletin number
- 08-255-25
- Component
- Electrical system
- Summary
- Flash: Radio Frequency Hub Module (RFHM) Updates Technicians may experience the following Diagnostic Trouble Code (DTC): ● B22A9-00 - ECU Internal Performance. NOTE: This DTC will be Active and there are no customer symptoms with this DTC. This bulletin involves inspecting and possibly updating the RFHM with the latest available software and also possibly replacing the RFHM.
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