{"nhtsa_id":10085304,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-12-01","date":"2014-04-16","document_id":"TSB130182-041414","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"THIS TECHNICAL SERVICE BULLETIN DESCRIBES THE VERIFICATION AND RESOLUTION OF FAULT CODES 1921, 1922, 1981, 3375 AND 3376 BEING SET ON CERTAIN ENGINES INSTALLED IN PACCAR CHASSIS DUE TO INCORRECT GROUND WIRING IN THE DIESEL EXHAUST FLUID (DEF) SYSTEM WIRING HARNESS. THIS IS AN UPDATE OF A PREVIOUS COMMUNICATION.","document":null,"url":"https://open.wenmarpro.com/bulletins/10085304","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISX12","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"ISX15","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"PACCAR","model":"PX7","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"PACCAR","model":"PX9","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":[]}