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
| SSM 50327 | 2021-12-26. Service bulletin. PARKING BRAKE. Some 2021 F-150 Tremor vehicles built on or before 26-Aug-2021 may exhibit a condition where the active park assist system is inoperative with an Active Park Fault message displayed in the instrumental panel cluster (IPC) and/or in the SYNC display. This may be due to the software in the anti-lock brake system (ABS). To correct this condition, reprogram the ABS module using the latest software level of the Ford Diagnosis and Repair System (FDRS). For claiming use causal part 2C219 and the applicable labor operations of Section 02 of the Service Labor Time Standards (SLTS) Manual. |
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| SSM 50323 | 2021-12-26. Service bulletin. ENGINE AND ENGINE COOLING. Some 2017-2022 F-Super Duty and 2016-2022 F-650/F-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 50306 | 2021-12-07. Service bulletin. ENGINE AND ENGINE COOLING. Some 2018-2021 EcoSport, Expedition, Navigator; 2019-2021 Ranger; 2020-2021 Escape, Corsair, Explorer, Transit; 2021 Bronco, Bronco Sport, Edge, Nautilus, F-150, Mustang; 2019-2022 Transit Connect; 2020-2022 Aviator, F-Super Duty; and 2022 Maverick vehicles may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) P0496, P0456, P0455, P04F0, and/or P0451. Ford has tested returned EVAP canister purge valves and found them to be fully functional. Prior to replacing the canister purge valve or other EVAP components, perform the following tests using the Ford Diagnosis and Repair System (FDRS) Scan Tool: Full System EVAP Leak Test - FDRS Location: TOOLBOX > PCM > PCM - Evap Emissions System Test and the EVAP Purge Valve Leak Test - FDRS Location: TOOLBOX > PCM > Evap Emission System Toolbox > CPV Check. |
| SSM 50294 | 2021-12-07. Service bulletin. EQUIPMENT:ELECTRICAL. Some 2021 F-150 vehicles may experience the IPC going blank or rebooting during an incoming or outgoing cell phone call. This may be due to the cell phone connected to SYNC having an emoji alongside the text of a name in the cell phone's contact list. If suspected, interview the customer about the concern happening during calls with specific contacts. If confirmed, have the customer remove emojis from the text of names in their contact list and re-evaluate. Inform customers that engineering is currently working on a solution for this condition and will be released via an over the air (OTA) software update expected in February 2022. Software will update automatically if the vehicle is connected to FordPass. Monitor OASIS for additional information. Schedule a service appointment for customers that are not connected to FordPass once the repair becomes available. |
| SSM 50290 | 2021-12-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; UNKNOWN OR OTHER. Some 2021 F150 vehicles may exhibit a diagnostic trouble code (DTC) U0253:00 stored in the ABS module. This DTC will not cause observable conditions or result from concerns with other vehicle systems. Diagnose all other DTCs before addressing U0253:00. This DTC should be disregarded when performing diagnostics for concerns unrelated to the ABS system. If an ABS system concern is present, perform normal diagnostics. Refer to Workshop Manual (WSM), section 206-09 > anti-lock brake system > diagnosis and testing. Ford is working on a software update that is expected via over the air (OTA) to resolve this informational DTC that is expected by June 2022. |
| SSM 50289 | 2021-12-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER. Some 2021 F-150 vehicles may exhibit an erroneous diagnostic trouble code (DTC) U2404:92 stored in the gateway module (GWM) after an over the air (OTA) update was performed or the GWM software was updated using the Ford Diagnosis And Repair System (FDRS). This may be due to various software parameters within the GWM. If this DTC is identified during normal diagnostics, but the vehicle does not exhibit any customer concerns around the GWM operation, this DTC should be disregarded. This DTC does not cause any observable concerns or warning messages and does not affect vehicle performance or durability. Ford is developing a software update which will be delivered to the vehicle via an over-the-air (OTA) GWM update in December 2021 to prevent this DTC from setting erroneously. |
| SSM 50278 | 2021-12-07. Service bulletin. ELECTRICAL SYSTEM. Some 2021 F-150 vehicles may exhibit an inoperative camera and diagnostic trouble codes (DTC) C1001:01 in the Sync Module (APIM), B115E:15 and/or B115E:31 in the Image Processing Module A (IPMA). This may be due to a loose coaxial cable or circuit connection. If only APIM DTC C1001:01 is present, verify connections between the IPMA and the APIM. If IPMA DTCs B115E:15 and/or B115E:31 are also present, verify connections between the IPMA and the affected camera(s). Refer to cell 145 of the online wiring diagram to identify affected connections. If an issue is found with any coaxial cable, the coaxial cable (10E929) can be serviced individually instead of the entire harness. If all connections are secure, continue with diagnostics in Workshop Manual (WSM), Section 413-13B. For claiming, use causal part number 10E929. |
| SSM 50276 | 2021-12-07. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:ADAS:HUD:CAMERA/SENSOR; UNKNOWN OR OTHER. Some 2021 Mustang Mach-E/F-150 vehicles may exhibit a Reverse Brake Assist Unavailable message displayed in the instrument panel cluster (IPC) with missing active guide lines in the reverse camera display. Diagnostic trouble code (DTC) U0415:86 may also be present in the IPMA. This may be due to a network interruption during module programming and/or when a module was disconnected which can cause the steering center find to be reset and various features to become disabled. The steering center find can be relearned by driving the vehicle for approximately 5 minutes, above 18 mph (30 km/h) and with no steering wheel input for a few seconds. When steering center is found, the Reverse Brake Assist Unavailable message should clear. If the active guide lines are missing, perform the IPMA camera alignment using Ford Diagnosis and Repair System (FDRS). |
| SSM 50271 | 2021-12-07. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; UNKNOWN OR OTHER. Some 2021 F-150/Mustang Mach-E/Bronco/Edge/Nautilus customers may experience an inoperative FordPass/LincolnWay app, features in FordPass/LincolnWay are not functioning and/or the customer cannot pair the FordPass/LincolnWay mobile app to the vehicle. If the telematics control unit (TCU) on the vehicle does not exhibit any diagnostic trouble codes (DTC), but the customer is running into these app concerns, this may be due to poor cell signal getting to the TCU. The TCU - Provisioning Application on the Ford Diagnosis and Repair System (FDRS) scan tool will provide cell signal strength information that can help to diagnose the source of the poor cell signal. If poor cell signal is found, refer to WSM 415-00 to help identify an antenna concern. Be sure the vehicle is an open environment. |
| SSM 50270 | 2021-12-07. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; UNKNOWN OR OTHER. Some 2021 F-150 vehicles with ProPower Onboard may exhibit a message in the touchscreen stating Pro Power Onboard Turned Off Ground Fault Detected, after performing the Pro Power Onboard test function. This is a normal response after performing the test and full system function may be restored after pressing the on-screen RESET button. Inform customers that engineering is currently working on a solution for this condition and will be released via an over the air (OTA) software update expected in April of 2022. The software will update automatically if Vehicle Connectivity is turned ON. Inform the customer that durability is not affected and they can continue to drive the vehicle. Contact the customer in May of 2022 to determine if they received the update. If the customer needs assistance, schedule a follow-up appointment. Monitor OASIS for updates. |
| TSB 21-2388 | 2021-12-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT. Some 2021 F-150 vehicles equipped with SYNC 4 without navigation may exhibit a condition where the compass direction indication is stuck or is not updating correctly in the instrument cluster and/or SYNC 4 screen. This may be due to a software concern in the telematics control unit (TCU) and the accessory protocol interface module (APIM). To correct the condition, follow the Service Procedure steps to reprogram the TCU and the APIM. Note: The TCU and the APIM software update that addresses the symptom listed in this bulletin may have been sent via over the air (OTA) to connected vehicles that have automatic updates enabled through the SYNC 4 screen. Enter the vehicle identification number (VIN) in Professional Technician System (PTS) and check the OTA Dashboard under the Connected Vehicle tab for OTA update history. If an update to the APIM has successfully completed recently and the customer is reporting the symptoms are no longer present, this article may not apply. |
| TSB 21-2407 | 2021-12-01. Service bulletin. POWER TRAIN. Some 2021 F-150 vehicles equipped with a 10R80 MHT transmission and built on or before 23-Apr-2021 may exhibit a harsh 1-3 upshift and/or a harsh electric to gas engine drive transition. This may be due to the software in the powertrain control module (PCM). To correct the condition, follow the Service Procedure to reprogram the PCM. |
| TSB 21-2373 | 2021-11-02. Service bulletin. ENGINE AND ENGINE COOLING. Some 2021 F-150 vehicles equipped with equipped with a 3.5L EcoBoost or 3.5L PowerBoost and built on or before 31-Mar-2021 may experience an external loss of coolant. This may be due to a leak in the degas bottle hose between the degas bottle and thermostat housing. To correct the condition, follow the Service Procedure to inspect and replace the left degas bottle hose between the degas bottle and thermostat housing. |
| SSM 50226 | 2021-11-02. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE. Some 2021 F-150 vehicles may experience a false alarm activation event with a trailer connected. A Security System Detected A Trailer Disconnect message may also display in the FordPass app. This may be due to various software parameters in the trailer module (TRM) and compatibility with certain trailer lights. Inform customers that Ford is developing a software update that is expected in February 2022. Let the customer know they can continue to drive the vehicle and schedule a follow-up appointment for repair in March 2022. For trailers that experience this false alarm event, advise customers to electrically disconnect the trailer when parked, then lock, unlock and lock the vehicle again, and reconnect the trailer. Once the update becomes available, contact the customer and confirm the service appointment is going forward. Monitor OASIS for updates. |
| SSM 50229 | 2021-11-02. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS:ACCESORY POWER OUTLET/JACK/PORT/USB/SAE/CIGARETTE LIGHTER. Some 2021 F-150 vehicles equipped with a 400W alternating current (AC) power outlet system may experience the AC power outlet system being inoperative and DTC B1330:9A stored in the BCM. This may be due to a connection and/or outlet issue at any of the 3 AC power outlets. If this concern is present, closely inspect C4628 at the pickup bed AC outlet for possible connection and/or contamination issues and repair as necessary. If there are no connection or contamination issues present at C4628, or a repair has been made AC power outlet system, you must download and run the Reset the Battery Monitoring Sensor Learned Values app (routine 203A) in the FDRS to relearn the direct current/alternating current converter module A (DCACA) outlet configuration and retest. If the B1330:9A persists, continue with normal diagnostics in the Workshop Manual, Section 414-05. |
| SSM 50228 | 2021-11-02. Service bulletin. ENGINE AND ENGINE COOLING. Some 2021 F-150 vehicles equipped with a 3.5L PowerBoost engine may experience a Motor Coolant Over Temperature message in the instrument panel cluster (IPC) and diagnostic trouble code (DTC) P0A2F:94 stored in the secondary on-board diagnostic module C (SOBDMC). This may be due to software parameters in the SOBDMC. Inform customers that engineering is currently working on a solution for this condition and will be released via an over the air (OTA) software update expected in February of 2022. The software will update automatically if Vehicle Connectivity is turned ON. Inform the customer that powertrain durability is not affected and they can continue to drive the vehicle. Contact the customer in March of 2022 to determine if they received the update. If the customer needs assistance, schedule a follow-up appointment. Monitor OASIS for updates. |
| TSB 21-2310 | 2021-11-02. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI; ELECTRICAL SYSTEM. Some 2021 Mach-E/F-150 vehicles may experience at least one of the following symptoms: audio settings resetting after a key cycle, Android Auto connection concerns, Sirius presets missing more than three pages after a key cycle, Information and Entertainment screen freezing/locking up, Pro-Power Onboard messaging confusion after a tripped circuit breaker (F-150 only), WiFi keyboard defaulting to UK English, windows media audio (WMA) files not playing properly from a universal serial bus (USB) device, intermittent blank Information and Entertainment screen, Apple CarPlay connection concerns, and/or Bluetooth connectivity concerns. This may be due to the software in the accessory protocol interface module (APIM). To correct the condition, follow the Service Procedure steps to reprogram the APIM. |
| TSB 21-2295 | 2021-11-02. Service bulletin. EQUIPMENT; SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE; EQUIPMENT ADAPTIVE/MOBILITY. Some 2021 F-150 vehicles built on or before 14-June-2021 may exhibit a rubbing noise at the front of the vehicle while driving and/or diagnostic trouble codes (DTC) C0031 and/or C0034 in the anti-lock brake system (ABS) module. This may be caused by an incorrectly routed front brake flexible hose. To correct the condition, follow the Service Procedure to inspect the front brake flexible hose routing. |
| SSM 50217 | 2021-10-29. Service bulletin. ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE; UNKNOWN OR OTHER. Some 2021 F-150 vehicles may exhibit diagnostic trouble code (DTC) U0143:87 stored in the trailer module (TRM). This may be due to various software parameters in the TRM. This DTC should be disregarded as it does not cause any observable concerns or warning messages and does not affect vehicle performance or durability. Ford is developing a software update which will be delivered to the vehicle via an over-the-air (OTA) TRM update beginning in March 2022 to prevent this DTC from setting. |
| SSM 50211 | 2021-10-29. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Some 2021 F-150 vehicles equipped with power running boards (PRB) may exhibit a running board that deploys after exiting and locking the vehicle, remain deployed when the key fob is stored in or near the vehicle or becoming out of sequence with one up and one down and/or DTCs C1008 or C1009. This may be the result of driver seat module (DSM) software. To correct this condition, reprogram the DSM using the latest level of the Ford Diagnosis and Repair System (FDRS). Make sure you are connected to the internet when entering module programming to obtain the latest updates. For claiming, use casual part 14C708 and the applicable labor operations of Section 10 of the Service Labor Time Standards (SLTS) Manual. |
| SSM 50202 | 2021-10-29. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. Some 2021 F-150 vehicles may experience an illuminated anti-lock brake system (ABS) indicator in the instrument panel cluster (IPC) with diagnostic trouble code (DTC) U3000:48 stored in the ABS module. The U3000:48 DTC in the ABS module typically sets in conjunction with various chassis DTCs. When addressing related ABS concerns, all chassis DTCs are to be diagnosed and resolved first using Workshop Manual (WSM), Section 206-09, before attempting to diagnose and resolve any network communication DTCs. |
| SSM 50184 | 2021-10-29. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CLUTCHES/BANDS:ACTUATORS/SOLENOIDS. Some 2021 Bronco/F-150/Explorer/Aviator/Police Interceptor Utility vehicles, excluding hybrid, may exhibit harsh or delayed engagement/shift concerns. Most concerns may be addressed with the PCM/TCM Transmission Accelerated Main Control Break In Routine. Refer to Workshop Manual (WSM), Section 307-01, 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 along with an adaptive drive cycle before attempting internal service. Although this routine was developed for low mileage vehicles, its usage is being expanded for various symptoms across the life of the vehicle.For claiming, use causal part 7A100 and applicable labor operations in Section 7 of the Service Labor Time Standards (SLTS) Manual. |
| SSM 50167 | 2021-10-29. Service bulletin. COMMUNICATION: VEHICLE TO INFRASTRUCTURE; STRUCTURE; EQUIPMENT. Some 2021 F-150 vehicles equipped with a 2.0kW Pro Power Onboard inverter system and built on or before 22-Nov-2021 may experience a loud fan noise emitting from under the rear seat. This may be due to various software parameters in the direct current/alternating current converter module A (DCACA). A 2.0kW Pro Power Onboard inverter system is identified by: DCACA inverter assembly being located in the cabin under the rear seat on the left side of the vehicle. To correct the condition using the latest level of Ford Diagnosis and Repair System (FDRS), reprogram the DCACA module. For claiming use causal part number 19G317 and applicable labor times from Section 10 of the Service Labor Times Standard (SLTS) Manual. |
| TSB 21-2338 | 2021-10-05. Service bulletin. ENGINE; UNKNOWN OR OTHER. Some 2021 F-150 vehicles equipped with a 3.5L PowerBoost engine may exhibit an illuminated malfunction indicator lamp (MIL) and diagnostic trouble codes (DTCs) P0A1A:06 and/or P1A0E:64 stored in the secondary on board diagnostic control module C (SOBDMC), also referred to as the inverter system controller (ISC). These DTCs may be set due to an issue related to electric motor performance. To correct the condition, follow the Service Procedure steps to identify a concern with the hybrid drive unit. |
| SSM 50162 | 2021-10-01. Service bulletin. BACK OVER PREVENTION. Some 2021 Mustang Mach-E and F-150 vehicles equipped with a 360 degree camera system may experience a Reverse Brake Assist Unavailable message displayed in the instrument panel cluster (IPC) and diagnostic trouble code (DTC) B1578:78 in the image processing module A (IPMA) after an on-demand self test is performed. To clear the Reverse Brake Assist Unavailable message displayed in the IPC, download and run the 360 Degree View Camera Alignment app for the IPMA using the latest version of the Ford Diagnosis and Repair System (FDRS). Once the 360 Degree View Camera Alignment routine is successful and the Reverse Brake Assist Unavailable message is no longer displayed in the IPC, perform a continuous memory self test. If any DTC's persist, continue with Workshop Manual (WSM), Section 419-07 diagnostic procedures. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.