{"vehicle":{"id":"2025_mazda_cx-90","year":2025,"make":"Mazda","model":"CX-90"},"code":"P0531","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":7,"bulletins":[{"nhtsa_id":11017478,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-05-02","date":"2025-04-05","document_id":"07-003-25b","mfr_campaign":null,"component":"UNKNOWN OR OTHER","summary":"Some vehicles may experience issues with the remote/timer air conditioners (pre-conditioning system) not working, or not functioning after activation. NOTE: If DTC P0531 is present, see TSB 07-001/25. This may be caused by improper control logic of the dash-","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11017478-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11017478-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11017478"},{"nhtsa_id":11017477,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-05-02","date":"2025-04-05","document_id":"07-001-25c","mfr_campaign":null,"component":"UNKNOWN OR OTHER","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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11017477-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11017477-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11017477"},{"nhtsa_id":11016201,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-04-01","date":"2025-03-25","document_id":"07-001-25b","mfr_campaign":null,"component":"UNKNOWN OR OTHER","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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11016201-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11016201-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11016201"},{"nhtsa_id":11013564,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-02-04","date":"2025-01-11","document_id":"07-001-25a","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; ENGINE","summary":"[TEMPORARILY SUSPENDED] 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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013564-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013564-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11013564"},{"nhtsa_id":11013563,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-02-04","date":"2025-01-07","document_id":"07-001-25","mfr_campaign":null,"component":"ENGINE; ELECTRICAL SYSTEM","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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013563-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013563-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11013563"},{"nhtsa_id":11012340,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-01-04","date":"2024-12-24","document_id":"07-004-24a","mfr_campaign":null,"component":"UNKNOWN OR OTHER; ENGINE","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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11012340-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11012340-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11012340"},{"nhtsa_id":11005559,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-08-02","date":"2024-07-24","document_id":"SA-003-24a","mfr_campaign":null,"component":"UNKNOWN OR OTHER","summary":"Some customers with a PHEV CX-90 may report a warning light or a reported issue of A/C malfunction. Upon inspection, the technician will discover that the vehicle has the P0531 diagnostic trouble code set.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11005559-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11005559-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11005559"}],"url":"https://open.wenmarpro.com/makes/mazda/cx-90/2025/bulletins?code=P0531"},"related":{"components":[],"bulletins":[],"recalls":{"may_apply":true,"recalls":[],"lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null}}},"url":"https://open.wenmarpro.com/makes/mazda/cx-90/2025/codes/P0531","note":"The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.","attribution":["Contains information licensed under the Open Government Licence – Canada."]}