RAM 2500 2019–2020 — technical service bulletin
Bulletin S2118000001 · NHTSA communication 10220536 · issued Feb 9, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2020
model years
7
vehicle entries
Official summary
Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P0471 ? Exhaust Pressure Sensor 1 Performance, Set.
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.