{"vehicle":{"id":"2003_honda_element","year":2003,"make":"Honda","model":"Element"},"code":"P0420","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":4,"bulletins":[{"nhtsa_id":10014141,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-04-28","date":"2004-06-16","document_id":"604","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","summary":"UPDATE ECM/PCM FOR DIAGNOSTIC TROUBLE CODE P0420, CATALYST BELOW THRESHOLD. *NM","document":null,"url":"https://open.wenmarpro.com/bulletins/10014141"},{"nhtsa_id":10014032,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-04-28","date":"2004-07-01","document_id":"07012004","mfr_campaign":null,"component":"EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL","summary":"S/M FIX DTC P0420 TROUBLESHOOTING. *EH","document":null,"url":"https://open.wenmarpro.com/bulletins/10014032"},{"nhtsa_id":10003479,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-10-22","date":"2003-07-08","document_id":"03031","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR","summary":"MALFUNCTION INDICATOR LAMP COMES ON WITH DIAGNOSTIC TROUBLE CODE P0420 (CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD). *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10003479"},{"nhtsa_id":10002097,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-08-14","date":"2003-06-03","document_id":"03031","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR","summary":"MALFUNCTION INDICATOR LAMP ON AND DIAGNOSTIC TROUBLE CODE P0420 (CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD) IS SET. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10002097"}],"url":"https://open.wenmarpro.com/makes/honda/element/2003/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/element/2003/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."]}