{"nhtsa_id":10186567,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-02-04","date":"2021-01-06","document_id":"SSM 49430","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"2011-2021 F-Super Duty and 2016-2021 F-650/F-750 vehicles equipped with a 6.7L engine may exhibit a high/elevated idle condition. During prolonged idle time, vehicles may experience this high/elevated idle to reduce buildup of unburned hydrocarbons from the SCR system. The powertrain control module (PCM) estimates hydrocarbon levels in the SCR and may increase idle speed to remove them. Idle speed will be increased to 1000 revolutions per minute (rpms) for ambient temperatures near 26C (80F) and may increase to as high as 1200 rpms at -40 C (-40F). These elevated idle periods can last from 20-40 minutes, depending on ambient temperatures. During power take off (PTO) use and already using idle set point control, the elevated speed is disabled. It is required that the operator monitor the vehicle and adhere to the Exhaust Filter warning messages.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10186567-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10186567-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10186567","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F-250 SD","year_from":2011,"year_to":2021,"match":"base","vehicle_ids":["2011_ford_f-250","2012_ford_f-250","2013_ford_f-250","2014_ford_f-250","2015_ford_f-250","2016_ford_f-250","2017_ford_f-250","2018_ford_f-250","2019_ford_f-250","2020_ford_f-250","2021_ford_f-250"]},{"make":"FORD","model":"F-350 SD","year_from":2011,"year_to":2021,"match":"base","vehicle_ids":["2011_ford_f-350","2012_ford_f-350","2013_ford_f-350","2014_ford_f-350","2015_ford_f-350","2016_ford_f-350","2017_ford_f-350","2018_ford_f-350","2019_ford_f-350","2020_ford_f-350","2021_ford_f-350"]},{"make":"FORD","model":"F-450 SD","year_from":2011,"year_to":2020,"match":"base","vehicle_ids":["2011_ford_f-450","2012_ford_f-450","2013_ford_f-450","2014_ford_f-450","2015_ford_f-450","2016_ford_f-450","2017_ford_f-450","2018_ford_f-450","2019_ford_f-450","2020_ford_f-450"]},{"make":"FORD","model":"F-550 SD","year_from":2011,"year_to":2020,"match":"base","vehicle_ids":["2011_ford_f-550","2012_ford_f-550","2013_ford_f-550","2014_ford_f-550","2015_ford_f-550","2016_ford_f-550","2017_ford_f-550","2018_ford_f-550","2019_ford_f-550","2020_ford_f-550"]},{"make":"FORD","model":"F-650 SD","year_from":2016,"year_to":2019,"match":"base","vehicle_ids":["2016_ford_f-650","2017_ford_f-650","2018_ford_f-650","2019_ford_f-650"]},{"make":"FORD","model":"F-650 SD","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_ford_f-650"]},{"make":"FORD","model":"F-750 SD","year_from":2016,"year_to":2019,"match":"base","vehicle_ids":["2016_ford_f-750","2017_ford_f-750","2018_ford_f-750","2019_ford_f-750"]},{"make":"FORD","model":"F-750 SD","year_from":2021,"year_to":2021,"match":"base","vehicle_ids":["2021_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":[]}