{"nhtsa_id":10056718,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2015-02-07","date":"2015-04-01","document_id":"TSB-140117","mfr_campaign":null,"replaces":"TSB- 140117-A","component":"ENGINE","mfr_system":null,"summary":"CUMMINS: IN SOME CHASSIS, FAULT CODES 555 AND 556 FOR HIGH CRANKCASE PRESSURE, ARE FOUND TO CAUSE WORN OR BROKEN PISTON RINGS DUE TO DUST/DEBRIS ENTERING AT CONNECTION POINT BETWEEN TURBOCHARGER COMPRESSOR INLET AND CLEAN AIR INTAKE HOSE. MODEL 2012-13 F650/F750. *PE UPDATED 12/16/15. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10056718","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"CUMMINS","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"ENGINE","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"FORD","model":"F-650","year_from":2012,"year_to":2013,"match":"exact","vehicle_ids":["2012_ford_f-650","2013_ford_f-650"]},{"make":"FORD","model":"F-750","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_ford_f-750"]}],"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":[]}