{"nhtsa_id":10015999,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-08-18","date":"2005-07-20","document_id":"0504","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR","mfr_system":null,"summary":"THREE WAY CATALYST, CATALYTIC EFFICIENCY DIAGNOSTIC TROUBLE CODES (DTCS) STORED IN DTC MEMORY. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10015999","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"catalytic-converter","name":"Catalytic converter","parent":"exhaust-emissions"}],"codes":[],"topics":[],"vehicles":[{"make":"AUDI","model":"A4","year_from":2000,"year_to":2001,"match":"exact","vehicle_ids":["2000_audi_a4","2001_audi_a4"]},{"make":"AUDI","model":"A6","year_from":2000,"year_to":2001,"match":"exact","vehicle_ids":["2000_audi_a6","2001_audi_a6"]}],"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":[]}