Infiniti QX80 2016–2019 — technical service bulletin
Bulletin ITB20-005 · NHTSA communication 10172179 · issued Feb 18, 2020
Technical service bulletin
communication type
Electrical System
component
2016–2019
model years
4
vehicle entries
Official summary
2016-2019 QX80; MIL ON WITH DTC P0174 IF YOU CONFIRM The MIL is ON and only DTC P0174 (FUEL SYS LEAN B2) is stored in the ECM. ACTION 1. Confirm the current ECM part number. 2. Reprogram the ECM, if applicable.
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.