{"vehicle":{"id":"2021_hyundai_elantra","year":2021,"make":"Hyundai","model":"Elantra"},"code":"P1CD0","generic":false,"description":null,"bulletins":{"as_of":"2026-10-19","count":1,"bulletins":[{"nhtsa_id":10196551,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-06-10","date":"2021-05-27","document_id":"21-01-043H","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"This bulletin provides information related to the Engine Control Module (ECM) software update for 2021MY Elantra (CN7/CN7A) vehicles equipped with the 2.0L engine to update the ECM logic for the following conditions and DTCs: • Incorrect learning of the fuel adaptive values can occur if the engine is started at 14⁰F (-10⁰C) or colder ambient temperatures. If incorrect values are learned, the engine may stall when coming to a stop or at idle. DTC P016C: Closed Loop Air/Fuel Ratio Control at Limit-System Too Lean may be detected. The ECM software revises the logic for fuel adaptation learning and improves engine performance at idle. • The ECM software also revises the blower motor control duty cycle logic for DTC P1CD0: Air Blower Motor Inverter Performance.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10196551-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10196551-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10196551"}],"url":"https://open.wenmarpro.com/makes/hyundai/elantra/2021/bulletins?code=P1CD0"},"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/hyundai/elantra/2021/codes/P1CD0","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."]}