Mazda MAZDA3 2017 — technical service bulletin
Bulletin SA-030-18 · NHTSA communication 10143956 · issued Jun 25, 2018
Technical service bulletin
communication type
Fuel System, Gasoline
component
2017
model years
1
vehicle entries
Official summary
Some customer may complain about the CHECK ENGINE light ON while driving. When diagnosed, it is found that the PCM has stored DTC P0456 for evaporative gas leakage (extremely low). This may be caused by leakage detected from the catch tank unit (1) at the purge valve (2).
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.