{"nhtsa_id":52257,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1997-07-17","date":"1997-04-01","document_id":"12 02 97","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"M52/S52 MISFIRE FAULT CODES 238, 239, 240, 241, 242 OR243. *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/52257","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BMW","model":"328I","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"BMW","model":"Z3","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]}],"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":[]}