Mazda CX-30 2021–2023 — technical service bulletin
Bulletin 01-010-23a · NHTSA communication 10244670 · issued Oct 3, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021–2023
model years
6
vehicle entries
Official summary
Some customers may complain about engine surging 100-200 rpm when accelerating up a hill at altitudes around 6,700 feet or higher. This concern may be caused by improper PCM control software in particular situations. To eliminate this concern, the PCM control software has been modified.
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.