Service bulletins for the 2020 Ford F-450
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.
308 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| SSM 49795 | 2021-06-01. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; ELECTRICAL SYSTEM. Some 2018-2021 Ford and Lincoln vehicles may not be able to perform remote commands via the FordPass/LincolnWay App due to an erroneous deep sleep message. If the vehicle has been driven within 14 days and the battery state of charge is above 9.5 volts when the deep sleep message set, this is an erroneous message. Starting and running the vehicle will clear the message and allow the remote commands to function again. Inform customers that engineering is currently working on a solution for this condition that will be released via an over the air (OTA) update that is expected in June 2021. Replacement or reprogramming of the telematics control unit (TCU)/gateway module (GWM) will not resolve this condition. Monitor OASIS for additional information and schedule service appointments for customers once the repair becomes available. |
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| 21B03-S2 | 2021-05-04. Service bulletin. POWER TRAIN. Certain 2020 Model Year Super Duty F250-F600 Vehicles Equipped with a 10R140 Transmission - Number One Planetary and Ring Gear Assembly Additional vehicles are now eligible for this repair. Vehicles with a 4.30 axle gear ratio, Vehicles with a 4.10 axle gear ratio, Vehicles with a 4.88 axle gear ratio, Emergency vehicles and wrecker vehicles. |
| TSB 21-2100 | 2021-05-04. Service bulletin. POWER TRAIN. Some 2020-2021 F-Super Duty vehicles equipped with a 10R140 transmission may exhibit a ticking or scraping noise coming from the bellhousing. The noise may or may not go away while in PARK and/or NEUTRAL. This may be due to the torque converter studs contacting the flexplate inspection cover and/or internal torque converter damper spring contact. To correct the condition, inspect and adjust the flexplate inspection cover (gas engine only) and/or replace the torque converter (gas or diesel engine). |
| TSB 21-2049 | 2021-05-04. Service bulletin. POWER TRAIN. Some 2020 F-Super Duty vehicles equipped with a 10R140 automatic transmission may exhibit a harsh engagement/harsh shift/delayed shift with or without an illuminated malfunction indicator lamp (MIL) or diagnostic trouble codes (DTCs) P0729, P0731, P0732, P0733, P0734, P0735, P0736, P076F, P07D9, P07F7, P0751, P0756, P0761, P0766, P0771, P2707, P2700, P2701, P2702, P2703, P2704 and/or P2705 stored in the powertrain control module (PCM) or transmission control module (TCM). This may be due to sticking valves in the main control valve body. Most vehicles will improve and no longer exhibit the condition after the first 8,000 km (5,000 mi) of driving. To correct the condition, follow the Service Procedure steps to perform the transmission accelerated main control break-in routine for the appropriate clutches and/or overhaul main control valve body. |
| SSM 49756 | 2021-05-03. Service bulletin. BACK OVER PREVENTION:SOFTWARE. Some 2018-2021 vehicles supported by FDRS may not list a software update for a module under the SW Updates tab although an SSM or TSB is published for a software update. This may be due to the module already being at the latest software level. A later software level may have been programmed at the assembly plant, during a previous dealer visit or by an over the air (OTA) update for vehicles that have automatic updates enabled in the SYNC system settings. To review a vehicle's OTA update history, visit the Connected Vehicle > OTA Dashboard tab in OASIS. Information about the OTA Dashboard can be found on FMCDealer.com when performing a search on OTA History Job Aid. |
| SSM 49740 | 2021-05-03. Service bulletin. STEERING. Some 2017-2021 F-Super Duty four-wheel drive (4WD) vehicles may have a customer concern of intermittently exhibiting excessive steering oscillation. To correct the condition, replace the steering damper with KC3Z-3E651-B and return the vehicle to the customer. For claiming, use causal part 3E651 and applicable labor operations in Section 03 of the Service Labor Time Standards (SLTS) Manual. If the concern returns, refer to the updated procedures, with videos, in Workshop Manual (WSM), Section 211-03 Steering Linkage > Diagnosis and Testing > Symptom Chart. |
| SSM 49722 | 2021-05-03. Service bulletin. WHEELS. Some 2017-2021 F-Super Duty vehicles equipped with dual rear wheels (DRW) and 17 inch aluminum wheels may require valve stem replacement for the front wheels. The parts catalog has been updated to use service part F2GZ-1700-D for the front wheels. |
| TSB 21-2078 | 2021-04-03. Service bulletin. ELECTRICAL SYSTEM. Some 2020 F-Super Duty vehicles built on or before 10-Jul-2020 and equipped with an electronic steering actuator may exhibit increased steering effort at initial engine start-up, a Steering Assist Fault message present, and/or an illuminated steering warning indicator with diagnostic trouble code (DTC) U0131 stored in the instrument panel cluster (IPC). This may be due to the software in the power steering control module (PSCM). To correct the condition, follow the Service Procedure to update the software in the PSCM. |
| TSB 21-2058 | 2021-04-03. Service bulletin. FUEL SYSTEM, GASOLINE. Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L engine built on or before 10-Feb-2021 may exhibit an illuminated malfunction indicator lamp (MIL) with various fuel system related diagnostic trouble codes (DTCs) stored in the powertrain control module (PCM). While performing pinpoint test (PPT) M in the Powertrain Control/Emissions Diagnosis (PC/ED) Manual, the fuel pressure control valve (F_PCV) and/or fuel volume control valve (F_VCV) parameter identifications (PIDs) may not have an option to manually command them with the scan tool. This may be due to the PCM software. To correct the condition, follow the Service Procedure to reprogram the PCM. |
| TSB 21-2057 | 2021-04-03. Service bulletin. FUEL SYSTEM, GASOLINE. Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L engine built on or before 10-Feb-2021 may exhibit a thump/whine/knock noise from the fuel tank at idle or during key on, engine off (KOEO). The noise may be more pronounced at fuel levels at or below 1/4 tank. This may be due to the fuel pump strategy in the powertrain control module (PCM) software. To correct the condition, follow the Service Procedure to reprogram the PCM. |
| TSB 21-2056 | 2021-04-03. Service bulletin. POWER TRAIN. Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L engine and built on or before 10-Feb-2021 may exhibit an illuminated powertrain malfunction indicator (wrench) lamp with only diagnostic trouble code (DTC) P07F6 stored in the transmission control module (TCM). The vehicle may also exhibit harsh engagements, poor shift quality and/or loss of 9th gear as a result of the DTC being set. This may be due to the software in the TCM. To correct the condition, follow the Service Procedure to reprogram the TCM. |
| TSB 21-2055 | 2021-04-03. Service bulletin. POWER TRAIN. This article supersedes TSB 20-2336 to update the Title, Issue, Action, vehicles affected and production fix date. Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L engine built on or before 10-Feb-2021 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0300-P0308, P054F, P0603, P203B, P208B, P208C, P20EE, P2201, P24C2, P27B4, and/or P27B5 stored in the powertrain control module (PCM). The vehicle may also exhibit a forced idle condition. This may be due to various strategies within the PCM software. To correct the condition, follow the Service Procedure to reprogram the PCM. |
| TSB 21-2052 | 2021-04-03. Service bulletin. EQUIPMENT. Some 2017-2021 F-Super Duty vehicles equipped with a 6.7L diesel may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P2459, P246C and/or P2463 with a Drive to Clean maintenance message. Vehicles operated primarily in a stationary or off-highway low speed use may exhibit frequent exhaust regeneration attempts. In these conditions, a vehicle may not easily allow for normal exhaust regeneration and may benefit from operator commanded regeneration (OCR) capability so it can perform complete exhaust regeneration in a stationary setting. |
| 21B03 | 2021-04-03. Service bulletin. POWER TRAIN. Certain 2020 Model Year Super Duty F250-F600 Vehicles Equipped with a 10R140 Transmission - Number One Planetary and Ring Gear Assembly In all of the affected vehicles, a distressed No. 1 planetary needle bearing inside the ring gear assembly will generate contamination that may produce rough shifts. A wrench light is likely to come on, and the transmission may go into safe mode and only operate in seventh gear. As damage progresses, the transmission may only be capable of limited vehicle speed or may not engage in forward or reverse |
| 21B03-S1 | 2021-04-03. Service bulletin. POWER TRAIN. Certain 2020 Model Year Super Duty F250-F600 Vehicles Equipped with a 10R140 Transmission - Number One Planetary and Ring Gear Assembly- Ref Cust Sat Program 21B03 dated March 3, 2021 In all of the affected vehicles, a distressed No. 1 planetary needle bearing inside the ring gear assembly will generate contamination that may produce rough shifts. A wrench light is likely to come on, and the transmission may go into safe mode and only operate in seventh gear. As damage progresses, the transmission may only be capable of limited vehicle speed or may not engage in forward or reverse |
| SSM 49708 | 2021-03-31. Service bulletin. ELECTRICAL SYSTEM. Some 2018-2019 F-150/F-Super Duty/Expedition/Navigator and 2020 Explorer/Aviator vehicles may exhibit a 'Trailer Connected' or 'Trailer Disconnected' message in the vehicle's message center with no trailer attached to the vehicle. To address this condition, reprogram the trailer module (TRM) using the appropriate Ford diagnostic scan tool. For claiming use causal part 19H332 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual. |
| SSM 49703 | 2021-03-31. Service bulletin. ENGINE AND ENGINE COOLING. Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L engine may exhibit an illuminated malfunction indicator lamp (MIL) with only diagnostic trouble code (DTC) P0315 stored in the powertrain control module (PCM). If no drivability concerns are present, clear the DTC and retest. If the DTC returns, perform normal diagnostics per the Powertrain Control/Emissions Diagnosis (PC/ED) Manual. If the DTC does not return, inform the customer that Ford is developing a PCM software fix that is expected in June, 2021. Advise the customer that vehicle durability is not affected by the condition and they can continue to drive the vehicle. Schedule a follow up appointment for repair in June, 2021. Monitor OASIS for updates. |
| SSM 49695 | 2021-03-31. Service bulletin. ELECTRICAL SYSTEM. Some 2020-2021 F-Super Duty vehicles may exhibit an inoperative radio, no communication with the audio front control module (ACM), and/or diagnostic code (DTC) U0184 stored in the SYNC module (APIM) or instrument panel cluster (IPC). If the vehicle is in transport mode, disable transport mode and retest. Refer to Workshop Manual (WSM), Section 419-10. If the concern is still present, perform a radio power reset by removing fuse F32 in the body control module (BCM) for 5 minutes. Reinstall the fuse and retest. If the concern is present, disconnect connector C240A from the ACM, reconnect, and retest. If the vehicle still exhibits the concern, refer to WSM, Section 415-00 and proceed with normal diagnostics. |
| SSM 49690 | 2021-03-31. Service bulletin. ELECTRICAL SYSTEM. For 2018-2021 EcoSport/Expedition/Navigator, 2019-2021 Ranger/Transit Connect, 2020-2021 Escape/Explorer/SuperDuty/Transit/Aviator/Corsair, 2021 Bronco Sport/F-150/Mustang/Mach-E the Workshop Manual (WSM) diagnostics may direct to replace a module on vehicles that use Ford Diagnosis and Repair System (FDRS). First, an FDRS session must be created on the vehicle prior to removing the faulted module. Once the session is started, run the Programmable Module Installation and replace the module only when instructed by FDRS. Installing a new module prior to starting a scan tool session may result in incomplete module configuration with DTCs U2100, U2101 and/or U2200. Once a session has been started, continue to follow normal WSM procedures to repair the vehicle. |
| SSM 49686 | 2021-03-31. Service bulletin. ENGINE AND ENGINE COOLING. Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L engine may experience a lack of power due to snow packing of the engine air cleaner when operating in extremely snowy conditions. Diagnostic trouble code (DTC) P1548 may be present in the powertrain control module (PCM). A heavy snow environment pre-filter service kit (service part LC3Z-9K635-AA) is now available for use but is not a warrantable item. It is recommended that the service kit be removed at temperatures greater than 50F (10C) and reinstall in subsequent winter seasons in order to maintain optimal vehicle performance. The service kit instructions mention that air filter FA-2031 is required, however the heavy snow environment pre-filter service kit can be used with either engine air filter FA-1951, or FA-2031 once it is available. |
| SSM 49661 | 2021-03-31. Service bulletin. ELECTRICAL SYSTEM. Some 2020-2021 F-Super Duty vehicles equipped with a 6.7L diesel engine or a 7.3L gas engine and dual alternators may require disabling or enabling the use of the second alternator. The FDRS scan tool now has an application available to allow for disabling or enabling the use of the second alternator. Start a vehicle session in FDRS using the vehicles VIN and go to the toolbox tab. The PCM will have an application called Generator Configuration. Download and run this application to enable or disable the second alternator. Next perform a Battery Monitor System (BMS) Reset. Download and run this reset and clear any DTCs. |
| SSM 49541 | 2021-03-03. Service bulletin. EQUIPMENT. Some 2018-2020 Ford and Lincoln vehicles equipped with TCU and WiFi Hotspot, May display Vehicle Hotspot feature not enabled on this vehicle when attempting to enter the Hotspot menu. When using the FordPass/Lincoln Way application, the customer may receive a message saying Wi-Fi has been disabled from this vehicle. Check the vehicle specifications or vehicle build information for the mfal code on the PTS website (Detailed Vehicle Specifications). If mfal = WAFAC or WAFAB do not replace the TCU, engineering is currently investigating this condition. Inform customers Ford is developing a software fix that is expected in early March. In the interim, let the customer know they can continue to drive the vehicle and schedule a follow-up appointment with the customer for early March. Monitor OASIS for updates. |
| SSM 49628 | 2021-03-03. Service bulletin. STEERING. Some 2017-2021 F-Super Duty vehicles may intermittently exhibit excessive steering oscillation. A new instructional video has been published in the Workshop Manual (WSM) to provide specific measurement instructions on the appropriate tools and methods to determine which steering linkage joints are exceeding lash specifications and which are operating as designed. The left side tie rod end and sector shaft arm drag link joints should not be replaced without obtaining the proper lash measurements. Refer to WSM, Section 211-03 Steering Linkage > Diagnosis and Testing > Symptom Chart. |
| TSB 20-2067 | 2021-03-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Some 2017-2020 F-Super Duty vehicles equipped with a 6.7L engine built on or before 10-Jun-2020 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) U029D, U029E, P22A7 and/or P2209 in the powertrain control module (PCM). This may be due to water intrusion into the oxides of nitrogen (NOx) connectors. To correct the condition, follow the Service Procedure to inspect the NOx sensor module and replace the 14406 wire harness. |
| SSM 49495 | 2021-02-04. Service bulletin. EQUIPMENT. Some 2005-2021 F-Super Duty 4x4 vehicles operated in extreme dust, mud or tar sand conditions may exhibit accelerated 4x4 vacuum hub seal and or wheel bearing wear as a result of harsh operating conditions. A knuckle seal shield kit is now available for customer purchase. The kit is designed for severe duty and is non warrantable. The knuckle seal shield kit GC3Z-54024A38-A includes an installation instruction sheet |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.