RAM 2500 2019–2022 — technical service bulletin
Bulletin S2008000186REVA · NHTSA communication 10229492 · issued Aug 15, 2022
Technical service bulletin
communication type
Electrical System
component
2019–2022
model years
16
vehicle entries
Official summary
Engine Control Module (ECM) Flash Failure, Diagnostic Trouble Code (DTC) U1601 ? ECU Application Software Code 1 Missing Or Corrupted
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.