Mazda CX-30 2019–2021 — technical service bulletin
Bulletin 09-026-23a · NHTSA communication 10241610 · issued Aug 3, 2023
Technical service bulletin
communication type
Electrical System
component
2019–2021
model years
5
vehicle entries
Official summary
Some vehicles may exhibit the warning message "Ultrasonic Sensor Malfunction" in the instrument cluster and the following DTC(s) stored after replacing the front and/or rear ultrasonic sensor(s) during body or paint repair.
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.