{"nhtsa_id":633729,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-09-24","date":"2002-06-01","document_id":"006","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION:MODULE","mfr_system":null,"summary":"CHANGE IN DIAGNOSTIC TROUBLE CODE P0128, THERMOSTAT MALFUNCTION, LOGIC. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/633729","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":["P0128"],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":2001,"year_to":2001,"match":"exact","vehicle_ids":["2001_kia_optima"]}],"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":[]}