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Service bulletins for the 2021 Ford F-150

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.

644 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
SSM 495072021-02-04. Service bulletin. POWER TRAIN. Some 2021 F-150/Explorer/Aviator/Police Interceptor Utility vehicles, excluding hybrid, with 5,000 miles (8,000 km) or less may exhibit harsh or delayed engagement/shift concerns with or without transmission diagnostic trouble codes (DTC) in the powertrain control module (PCM). Most concerns at low mileage may be addressed with the accelerated main control break-in routine. Refer to Workshop Manual (WSM) Section 307-01 Diagnosis and Testing, DTC Chart and/or Diagnosis By Symptom to identify the clutch(s) to be cycled. This routine cycles the shift solenoids and clutch control valves to remove contamination that may be sticking the valves, and must be performed before attempting internal service. For claiming, use causal part 7A100 and applicable labor operations in Section 7 of the Service Labor Time Standards (SLTS) Manual.
SSM 494832021-02-04. Service bulletin. POWER TRAIN. Some 2017-2021 F-Super Duty and 2016-2021 F650-750 with 6.7L diesel engines, 2015-2019 Transit with 3.2L diesel engines and 2018-2021 F-150 with 3.0L diesel engines may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P206C in the powertrain control module (PCM). Review of repair data supports that P206C is often the result of incorrect diesel exhaust fluid (DEF) concentration. Per Powertrain Control/Emissions Diagnosis (PC/ED) Pinpoint Test (PPT) RJ, a DEF concentration reading below 28% will set P206C and cause vehicle derate. If low concentration is suspected, drain fluid and replace with known good DEF before replacing any parts. Low concentration of DEF is not a warrantable condition.
SSM 494462021-02-04. Service bulletin. POWER TRAIN. Some 2021 F-Super Duty vehicles equipped with a 6.2L or 7.3L engine, F-150 vehicles equipped with a 3.3L or 5.0L engine, and Explorer/Police Interceptor Utility vehicles equipped with a 3.3L engine may exhibit an illuminated malfunction indicator (MIL) with diagnostic trouble code (DTC) P0106 stored in the powertrain control module (PCM) while in transport mode, especially in higher altitudes. To correct the condition, clear the DTCs and deactivate transport mode. Refer to Workshop Manual (WSM), Section 419-10 > General Procedures. Before starting the engine in the procedure, cycle the ignition to OFF, cycle the ignition to ON, wait ten seconds, cycle the ignition to OFF, wait ten seconds, then start the engine. If the condition remains, refer to the Powertrain Control/Emissions Diagnosis (PC/ED) Manual for diagnostics.
SSM 493882021-01-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; POWER TRAIN; ELECTRICAL SYSTEM. 2021 F-150/Explorer/Aviator/Police Interceptor Utility vehicles without a diesel engine and/or without a 10R80 MHT transmission have a new PCM-Transmission Accelerated Main Control Break In routine added to the Diagnosis and Testing Section of the WSM. This new routine uses the Ford diagnostic scan tool to cycle the shift solenoids and clutch control valves to free them from contamination that may be sticking the valves. Refer to WSM, Section 307-01.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.