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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: Engine are shown. Show all

Bulletins, newest first
SSM 497612021-05-03. Service bulletin. ENGINE AND ENGINE COOLING. Some 2011-2021 Mustang and F-150 vehicles equipped with a 5.0L engine may exhibit a ticking noise at idle after an engine oil change. It is often referred to as typewriter noise because of its similarity to the sound of a mechanical typewriter. The noise in question may be heard on some engines when engine temperatures reach 150F (65Å’C) or higher and engine speed is at idle up to approximately 1700 RPMs. It can typically be heard at the front wheel well and is often isolated to the transmission bell housing or oil pan area. The typewriter noise is not detrimental to the engine function or durability and has no short or long term effects on the engine. This an operating characteristic of the 5.0L engine and no repairs should be attempted.
SSM 495732021-03-03. Service bulletin. ENGINE AND ENGINE COOLING. Some 2021 F-150 vehicles equipped with a 3.5L PowerBoost engine may experience a rough running engine during idle and an illuminated malfunction indicator lamp (MIL) with diagnostics trouble code (DTC) P0300, P0304, P050E and/or P2451 stored in the powertrain control module (PCM). Inform customers that Ford is developing a calibration software update for the PCM that is expected in March. Let the customer know they can continue to drive the vehicle and schedule a follow-up appointment for repair in April. Once the update becomes available, contact the customer and confirm the service appointment is going forward. Monitor OASIS for updates.
SSM 495312021-03-03. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Some 2021 F-150 vehicles equipped with a 3.5L PowerBoost engine may exhibit an illuminated malfunction indicator lamp (MIL) and diagnostic trouble code (DTC) P2C23 stored in the powertrain control module (PCM). This concern may occur in temperatures at or below freezing. Refer to Workshop Manual (WSM) Section 303-3E, Pinpoint Test D for the appropriate diagnostic steps. If a root cause cannot be identified, clear the DTC and inform customers that Ford is developing a calibration update that is expected in February. Let the customer know they can continue to drive the vehicle until an appointment can be scheduled for repair. Contact the customer and schedule a service appointment when the update is available. Monitor OASIS for updates.
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.
SSM 493802021-01-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Some 2021 F-150/Explorer/Aviator/Police Interceptor vehicles may exhibit a flashing powertrain malfunction (wrench) indicator while in transport mode with diagnostic trouble code (DTC) P112A stored in the powertrain control module (PCM). This may be due to excessive engine starts while the vehicle is in transport mode. To correct the condition, deactivate transport mode. Refer to Workshop Manual (WSM), Section 419-10 > General Procedures. Cycle the ignition to RUN. If the concern still exists, perform normal diagnostics in the Powertrain Control/Emissions Diagnosis (PC/ED) Manual.

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