RAM 1500 2021–2022 — technical service bulletin
Bulletin S2225000004 · NHTSA communication 10225993 · issued Sep 17, 2022
Technical service bulletin
communication type
Fuel System, Gasoline
component
2021–2022
model years
2
vehicle entries
Official summary
Customer complaint may include MIL-On/check engine lamp-on condition. Upon further inspection, a DTC for P0456-Small Leak Detected may be set in the PCM.
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.