RAM 2500 2020 — technical service bulletin
Bulletin 1810222REVA · NHTSA communication 10229552 · issued Aug 10, 2022
Technical service bulletin
communication type
Fuel System, Gasoline
component
2020
model years
2
vehicle entries
Official summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain ControlModule (ECM/PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or moreof the following (DTCs) have been set: P0506 - Idle Control System RPM Lower Than Expected. P0299-00 - Turbocharger Underboost. P20EE-00 - NOx Catalyst Efficiency Below Threshold. P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation. P1451-00 - Diesel Particulate
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.