{"vehicle":{"id":"2010_audi_s4","year":2010,"make":"Audi","model":"S4"},"code":"P0420","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":1,"bulletins":[{"nhtsa_id":10118327,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-10-04","date":"2016-01-25","document_id":"Elsa Newsletter","mfr_campaign":null,"component":"ELECTRICAL SYSTEM:SOFTWARE","summary":"TSBs in this newsletters include the MIL on due to DTC P042000 and/or P043000 (Catalyst system Bank 1/2, Efficiency below threshold) being stored in the ECM. New ECM software implemented to correct the condition.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10118327-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10118327-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10118327"}],"url":"https://open.wenmarpro.com/makes/audi/s4/2010/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/audi/s4/2010/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."]}