{"nhtsa_id":10191951,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-08","date":"2021-04-22","document_id":"NTB21-034","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; EQUIPMENT","mfr_system":null,"summary":"2019-2021 ALTIMA AND 2021 ROGUE; AC INOPERATIVE WITH DTC B20C8-14 STORED IF YOU CONFIRM The AC compressor is not engaging when the AC is in the ON position as indicated by the yellow illumination on the AC button, And DTC B20C8-14 ECV (ELECTRICAL CONTROL VALVE) is stored in the IPDM. SERVICE PROCEDURE 1. Clear the DTC, and follow the DTC CONFIRMATION PROCEDURE in the ESM. • If DTC B20C8-14 is past, AC compressor operation is inhibited until the DTC is cleared. • If DTC B20C8-14 returns after being cleared (either Current or Past status), follow the ESM diagnosis procedure. • For models with Automatic Air Conditioning, go to section: VENTILATION, HEATER & AIR CONDITIONER > HEATER & AIR CONDITIONING CONTROL SYSTEM > AUTOMATIC AIR CONDITIONING > DTC/CIRCUIT DIAGNOSIS > B20C8-14 ECV (ELECTRICAL CONTROL VALVE). • For models with Manual Air Conditioning, go to section: VENTILATION, HEATER & AIR CONDITIONER > HEATER & AIR CONDITIONING CONTROL SYSTEM > MANUAL AIR CONDITIONING > DTC/CIRCUIT DIAGNOSIS > B20C8-14 ECV (ELECTRICAL CONTROL VALVE).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10191951-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10191951-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10191951","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":["B20C8"],"topics":[],"vehicles":[{"make":"NISSAN","model":"ALTIMA","year_from":2019,"year_to":2021,"match":"exact","vehicle_ids":["2019_nissan_altima","2020_nissan_altima","2021_nissan_altima"]},{"make":"NISSAN","model":"ROGUE","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_nissan_rogue"]}],"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":[]}