{"nhtsa_id":10085412,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-12-02","date":"2014-01-27","document_id":"TSB140013-012514","mfr_campaign":null,"replaces":null,"component":"ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)","mfr_system":null,"summary":"THIS TECHNICAL SERVICE BULLETIN DESCRIBES THE VERIFICATION AND RESOLUTION OF CERTAIN FAULT CODES OCCURING WHILE OPERATING IN TEMPERATURES BELOW FREEZING (32 DEGREES F). CONDENSATION FORMS IN THE CHARGE-AIR COOLER, EXHAUST GAS RECIRCULATION (EGR) COOLER AND/OR BLOWBY GASES, FREEZES AND CAUSES POOR PERFORMANCE AND/OR FAULT CODES 124, 125, 556, 1891, 1965, 1966, 2722, 2723, 2758, 2759, 2776 AND 2991. THE BULLETIN DESCRIBES THE MEASURES THAT MUST BE TAKEN TO ADDRESS THIS SITUATION.","document":null,"url":"https://open.wenmarpro.com/bulletins/10085412","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"egr-valve","name":"EGR valve","parent":"exhaust-emissions"}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISL9G","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":[]}