Infiniti I30 1998–1999 — technical service bulletin
Bulletin ITB99015 · NHTSA communication 604735 · issued Apr 15, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1998–1999
model years
4
vehicle entries
Official summary
Service manual procedure change for rear oxygen sensor diagnostic trouble code(dtc(s) and three-way catalyst dtc. *tt
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.