{"nhtsa_id":635306,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-21","date":"2002-05-01","document_id":"1510","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION:MODULE","mfr_system":null,"summary":"SOME VEHICLES EQUIPPED WITH DETROIT DIESEL ENGINES AND OPTIMIZED IDLE, AND BUILT BEFORE JANUARY 25, 2002, MAY LOG REPEATED FAULT CODES 62 WHILE IN THE OPTIMIZED IDLE MODE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/635306","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"ARGOSY","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"FREIGHTLINER","model":"CENTURY","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"FREIGHTLINER","model":"COLUMBIA","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":[]}