Chrysler 300M 1998–1999 — technical service bulletin
Bulletin 1802302 · NHTSA communication 635687 · issued Aug 5, 2002
Technical service bulletin
communication type
Engine and Engine Cooling
component
1998–1999
model years
8
vehicle entries
Official summary
Concerns with malfunction indicator lamp illumination with a catalyst efficiency failure diagnostic trouble code (dtc p0420) recorded in the power train control module (pcm). *tt
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.