{"nhtsa_id":10017659,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-11-17","date":"2005-10-19","document_id":"04705","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"MALFUNCTION INDICATOR LAMP ON DIAGNOSTIC TROUBLE CODE P0420. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10017659","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P0420"],"topics":[],"vehicles":[{"make":"TOYOTA","model":"SIENNA","year_from":2001,"year_to":2003,"match":"exact","vehicle_ids":["2001_toyota_sienna","2002_toyota_sienna","2003_toyota_sienna"]}],"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":[]}