Toyota Sienna 2015–2016 — technical service bulletin
Bulletin G0G_DEALER LETTE · NHTSA communication 10100731 · issued Jun 14, 2016
Technical service bulletin
communication type
Electrical System
component
2015–2016
model years
2
vehicle entries
Official summary
Dealer email: the subject vehicles are equipped with an oxygen sensor which could experience wire degradation inside the oxygen sensor wiring harness caused by vehicle vibration during normal operation. If this occurs, the vehicle will illuminate the check engine light.
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.