{"vehicle":{"id":"2015_chevrolet_impala","year":2015,"make":"Chevrolet","model":"Impala"},"code":"P0621","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":4,"bulletins":[{"nhtsa_id":10201128,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-09-07","date":"2015-12-01","document_id":"PI1409A","mfr_campaign":null,"component":"ENGINE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE","summary":"Malfunction Indicator Lamp (MIL) Illuminated with DTCs P2096 and/or P0621 Set","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10201128-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10201128-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10201128"},{"nhtsa_id":10114726,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2014-11-13","document_id":"PIC6017A","mfr_campaign":null,"component":"ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM","summary":"This Preliminary Information communication provides information to the technician about vehicles that may have an intermittent \"Service Charging System\" message on the Driver Information Center or a Battery Malfunction Indicator Lamp during an auto stop event. If there is no fault found during diagnostics for P0621 contact General Motors Technical Assistance Center for further assistance.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10114726-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10114726-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10114726"},{"nhtsa_id":10113526,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2015-02-06","document_id":"PI1409","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE","summary":"This preliminary informational bulletin provides repair information to correct a customer concern of Malfunction Indicator Lamp (MIL) Illuminated with technicians finding DTCs P2096 and/or P0621 set.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10113526-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10113526-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10113526"},{"nhtsa_id":10057594,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2015-06-11","date":"2014-11-01","document_id":"PIC6017A","mfr_campaign":null,"component":"FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:FILLING/CHARGING","summary":"GENERAL MOTORS 2014-2015 CHEVROLET MALIBU, 2015 CHEVROLET IMPALA: INTERMITTENT SERVICE CHARGING SYSTEM MESSAGE/ BATTERY MIL DTC P0621. *LJ","document":null,"url":"https://open.wenmarpro.com/bulletins/10057594"}],"url":"https://open.wenmarpro.com/makes/chevrolet/impala/2015/bulletins?code=P0621"},"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/chevrolet/impala/2015/codes/P0621","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."]}