{"nhtsa_id":10110331,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-04","date":"2017-04-07","document_id":"TSB170045-040720","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)","mfr_system":null,"summary":"This Technical Service Bulletin describres the verification and resolution of repeat occurances of high crankcase pressure Fault Code 555 or 556 immediately after engine start up at ambient temperatures below freezing. Coating crankcase pressure sensor with CRC 3-36 or WD-40 prevents water or debris accumulation in crankcase pressure sensor port that may freeze when temperatures drop below freezing.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10110331-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10110331-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10110331","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"pcv","name":"Crankcase ventilation (PCV)","parent":"exhaust-emissions"}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISX","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":"CUMMINS","model":"X15","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":[]}