Jeep Wrangler 2020–2021 — technical service bulletin
Bulletin S2008000033 · NHTSA communication 10222950 · issued Jan 1, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020–2021
model years
2
vehicle entries
Official summary
MIL Lamp On, DTC P0325 - Knock Sensor 1 Circuit
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.