{"vehicle":{"id":"2017_honda_fit","year":2017,"make":"Honda","model":"Fit"},"code":"P0420","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":14,"bulletins":[{"nhtsa_id":11015694,"type":"other","type_name":"Other","date_added":"2025-03-19","date":"2025-03-08","document_id":"ATI&03072025901","mfr_campaign":null,"component":"ENGINE","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 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/2025/MC-11015694-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11015694-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11015694"},{"nhtsa_id":11015010,"type":"other","type_name":"Other","date_added":"2025-03-05","date":"2025-02-22","document_id":"ATI&02212025901","mfr_campaign":null,"component":"ENGINE","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 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/2025/MC-11015010-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11015010-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11015010"},{"nhtsa_id":11014324,"type":"other","type_name":"Other","date_added":"2025-02-18","date":"2025-02-08","document_id":"ATI&02072025901","mfr_campaign":null,"component":"ENGINE","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 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/2025/MC-11014324-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11014324-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11014324"},{"nhtsa_id":11013099,"type":"other","type_name":"Other","date_added":"2025-01-25","date":"2025-01-09","document_id":"ATI&01082025901","mfr_campaign":null,"component":"ENGINE","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 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/2025/MC-11013099-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013099-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11013099"},{"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"},{"nhtsa_id":11010116,"type":"other","type_name":"Other","date_added":"2024-11-06","date":"2024-10-23","document_id":"ATI&10232024907","mfr_campaign":null,"component":"ENGINE","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 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-11010116-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11010116-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11010116"},{"nhtsa_id":11009181,"type":"other","type_name":"Other","date_added":"2024-10-25","date":"2024-10-02","document_id":"ATI&10022024908","mfr_campaign":null,"component":"ENGINE","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 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-11009181-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11009181-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11009181"},{"nhtsa_id":11008049,"type":"other","type_name":"Other","date_added":"2024-09-26","date":"2024-09-17","document_id":"ATI&09162024905","mfr_campaign":null,"component":"ENGINE","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 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-11008049-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11008049-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11008049"},{"nhtsa_id":10250729,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-02-27","date":"2024-02-15","document_id":"ATI&02152024905","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2018 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 collect specific parts from the vehicle prior to your attempting a repair of any kind.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10250729-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10250729-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10250729"}],"url":"https://open.wenmarpro.com/makes/honda/fit/2017/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/fit/2017/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."]}