RAM 3500 2020 — technical service bulletin
Bulletin 1809022 · NHTSA communication 10228046 · issued Apr 28, 2022
Technical service bulletin
communication type
Electrical System
component
2020
model years
1
vehicle entries
Official summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DiagnosticTrouble Code (DTC) has been set: P1404 - EGR Position Sensor Rationality Closed. In addition, customers may experience one or more of the following concerns: In Power Take-Off (PTO) mode, transmission gear engagement is abrupt and idle speedis high when transitioning From Park To Drive/Reverse Gear.
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.