Toyota Sienna 2015–2016 — technical service bulletin
Bulletin G0G-DL-61416 · NHTSA communication 10197432 · issued Jun 14, 2015
Technical service bulletin
communication type
Electrical System
component
2015–2016
model years
2
vehicle entries
Official summary
Oxygen sensor could experience wire degradation inside the oxygen sensor wiring harness.
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.