Mazda CX-70 2024–2025 — technical service bulletin
Bulletin 07-001-25c · NHTSA communication 11017477 · issued Apr 5, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2024–2025
model years
3
vehicle entries
Official summary
Some vehicles may exhibit check engine light turned on at engine startup, with DTC P0531:00 stored in memory. DTC P0531:00 [PCM] - Refrigerant pressure sensor No.1 system: Function malfunction • This is caused by improper control logic of the PCM and the dash-electrical supply unit (Dash-ESU). To eliminate this concern, the control logic of the PCM and the Dash-ESU 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.