Jeep Grand Cherokee 2019–2021 — technical service bulletin
Bulletin S2108000084 · NHTSA communication 10220918 · issued Mar 30, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2021
model years
3
vehicle entries
Official summary
CEL (Check Engine Lamp) On, DTC P0197 Engine Oil Temperature Low
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.