{"vehicle":{"id":"2021_nissan_altima","year":2021,"make":"Nissan","model":"Altima"},"code":"B12A3","generic":false,"description":null,"bulletins":{"as_of":"2026-10-19","count":1,"bulletins":[{"nhtsa_id":10186854,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-02-06","date":"2021-01-28","document_id":"NTB21-009","mfr_campaign":null,"component":"FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM","summary":"DTC B12A3-72 FOR FUEL PUMP RELAY STUCK OPEN SERVICE INFORMATION DTC B12A3-72 (Fuel Pump Relay Stuck Open) may be stored when the IPDM monitor circuit internally sees 0V to ground at pin #46. This is caused by an internal short to ground in the IPDM or one of the IPDM fuses listed below is open. If B12A3-72 is current or reoccurs after erasing DTCs, inspect the model specific fuse first. If the fuse is not open replace the IPDM. • Altima – Fuse # 58 (page 2) • Kicks – Fuse # 54 (page 3) • Versa – Fuse # 61 (page 4) For additional IPDM diagnostic information refer to the Electronic Service Manual (ESM): Section ELECTRICAL & POWER CONTROL > POWER CONTROL SYSTEM > IPDM E/R. See model specific fuse locations starting on page 2.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10186854-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10186854-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10186854"}],"url":"https://open.wenmarpro.com/makes/nissan/altima/2021/bulletins?code=B12A3"},"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/nissan/altima/2021/codes/B12A3","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."]}