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RecallGazette

Vehicle problems, recalls & safety intelligence

Ford F-250 SD 2011–2021 — technical service bulletin

Bulletin SSM 49430 · NHTSA communication 10186567 · issued Jan 6, 2021

Technical service bulletin
communication type
Engine and Engine Cooling
component
2011–2021
model years
52
vehicle entries

Official 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-

Vehicles covered

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.