{"nhtsa_id":10204325,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-12-13","date":"2021-11-09","document_id":"S2108000265","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:ELECTRICAL","mfr_system":null,"summary":"The DTC B221F-00 Amplifier Internal Fault Set With No Audio Functionality Concerns","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204325-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204325-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10204325","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":["B221F"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_jeep_grand-cherokee"]}],"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":[]}