{"vehicle":{"id":"2013_buick_encore","year":2013,"make":"Buick","model":"Encore"},"code":"P0420","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":10173390,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-04-06","date":"2020-02-19","document_id":"19NA057","mfr_campaign":null,"component":"ENGINE; ELECTRICAL SYSTEM; EQUIPMENT","summary":"This Technical bulletin provides a procedure for dealers/technicians to correct a condition of Malfunction Indicator Lamp (MIL) Illuminated, DTC P0420 Set.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10173390-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10173390-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10173390"},{"nhtsa_id":10158849,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-04-22","date":"2019-03-19","document_id":"19NA057","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE; ENGINE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT","summary":"This Technical bulletin provides a procedure for dealers/technicians to correct a condition of Malfunction Indicator Lamp (MIL) Illuminated, DTC P0420 Set.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10158849-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10158849-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10158849"},{"nhtsa_id":10155109,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-03-25","date":"2018-11-01","document_id":"18NA331","mfr_campaign":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM","summary":"This bulletin provides a procedure to reprogram the ECM to correct a condition of MIL On, DTC P0420 Set.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10155109-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10155109-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10155109"}],"url":"https://open.wenmarpro.com/makes/buick/encore/2013/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/buick/encore/2013/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."]}