RAM 2500 2025 — technical service bulletin
Bulletin S2508000017 REV.A · NHTSA communication 11017133 · issued Apr 19, 2025
Technical service bulletin
communication type
Electrical System
component
2025
model years
4
vehicle entries
Official summary
Radio Frequency Hub (RFH) Module has an Active Diagnostic Trouble Code (DTC) B22A9-00 ECU Internal Performance.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.