{"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,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"Air Conditioner","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","components":[],"codes":["P0531"],"topics":[],"vehicles":[{"make":"MAZDA","model":"CX-70","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_mazda_cx-70"]},{"make":"MAZDA","model":"CX-90","year_from":2024,"year_to":2025,"match":"exact","vehicle_ids":["2024_mazda_cx-90","2025_mazda_cx-90"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}