{"nhtsa_id":10054771,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2014-02-25","date":"2014-01-31","document_id":"SB-11-13","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:DIESEL","mfr_system":null,"summary":"PETERBILT: AN ACTIVE FAULT CODE 3911, AMMONIA SENSOR COMMUNICATION, MAY BE DISPLAYED AND A REPAIR STRATEGY IS BEING PROVIDED. MODEL 320. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10054771","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PETERBILT","model":"320","year_from":2012,"year_to":2014,"match":"exact","vehicle_ids":["2012_peterbilt_320","2013_peterbilt_320","2014_peterbilt_320"]}],"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":[]}