Toyota Yaris 2019 — technical service bulletin
Bulletin Special Service · NHTSA communication 10181796 · issued Sep 3, 2020
Technical service bulletin
communication type
Electrical System
component
2019
model years
1
vehicle entries
Official summary
RE: The engine control module in the involved vehicles inadvertently contains software intended for vehicles with a different engine configuration. As a result, the engine control module is unable to clear certain diagnostic trouble codes and may result in a vehicle not passing state emission testing/smog checks.
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.