Infiniti QX4 1999–2000 — technical service bulletin
Bulletin ITB01045 · NHTSA communication 621950 · issued Aug 7, 2001
Technical service bulletin
communication type
Unknown / Other
component
1999–2000
model years
2
vehicle entries
Official summary
Some vehicles may exhibit a malfunction indicator lamp (mil) on with rear oxygen sensor diagnostic trouble codes p0138, p0139, p0140, p0158, p0159, and p0160 stored in the engine control module (ecm). *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.