{"nhtsa_id":10151802,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-12-17","date":"2018-11-27","document_id":"TSB180166-112620","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution of an internal malfunction of the knock control chip in the engine control module (ECM) causing intermittent false knock signal on all six cylinders simultaneously. Malfunction usually occurs when the engine is warm, logging all six cylinder knock fault codes either moderate, severe, or both.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10151802-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10151802-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10151802","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS WESTPORT","model":"ISL G","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS WESTPORT","model":"ISX12 G","year_from":null,"year_to":null,"match":null,"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":[]}