{"vehicle":{"id":"2022_honda_civic","year":2022,"make":"Honda","model":"Civic"},"code":"P0420","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":2,"bulletins":[{"nhtsa_id":11011792,"type":"other","type_name":"Other","date_added":"2024-12-12","date":"2024-12-03","document_id":"ATI&12022024909","mfr_campaign":null,"component":"ENGINE","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2024 Accord 1.5Ls, 2021-2024 Civics 1.5Ls, 2023-2024 CR-Vs 1.5Ls, and 2017 Fits with customer complaint of Check Engine Light (CEL) on with DTC P0420 [Catalyst System Efficiency Below Threshold] stored. To better understand the cause of this condition, AHM would like to specific parts from the vehicle prior to you attempting a repair of any kind.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11011792-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11011792-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11011792"},{"nhtsa_id":11010549,"type":"other","type_name":"Other","date_added":"2024-11-14","date":"2024-11-05","document_id":"ATI&11052024902","mfr_campaign":null,"component":"ENGINE","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2024 Accord 1.5Ls, 2021-2024 Civics 1.5Ls, 2023-2024 CR-Vs 1.5Ls, and 2017 Fits with customer complaint of Check Engine Light (CEL) on with DTC P0420 [Catalyst System Effciency Below Threshold] stored. To better understand the cause of this condition, AHM would like to specific parts from the vehicle prior to you attempting a repair of any kind.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11010549-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11010549-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11010549"}],"url":"https://open.wenmarpro.com/makes/honda/civic/2022/bulletins?code=P0420"},"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/honda/civic/2022/codes/P0420","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."]}