RAM 3500 2019–2020 — technical service bulletin
Bulletin S2108000091 · NHTSA communication 10198364 · issued May 14, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2020
model years
4
vehicle entries
Official summary
When The PTO Is Engaged, Engine RPM Will Not Exceed 1100 RPM And The Engine Surges. Diagnostic Trouble Codes (DTCs) P061B ? Internal Control Module Torque Performance, And/Or P064B ? PTO Control Module, 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.