# Service bulletin SSM 50306 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. - Type: Service bulletin - NHTSA id: 10204040 - Published by NHTSA: 2021\-12\-07 - Manufacturer's number: SSM 50306 - Manufacturer's date: 2021\-11\-23 - NHTSA component: ENGINE AND ENGINE COOLING ## NHTSA's summary 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. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204040-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204040-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Engine ## Trouble codes named P0451, P0455, P0456, P0496, P04F0 ## Vehicles listed - 2021 FORD BRONCO - 2021 to 2022 FORD BRONCO SPORT - 2018 to 2021 FORD ECOSPORT - 2021 to 2022 FORD EDGE - 2020 to 2021 FORD ESCAPE - 2018 to 2021 FORD EXPEDITION - 2020 to 2022 FORD EXPLORER - 2021 FORD F\-150 - 2020 to 2022 FORD F\-250 SD - 2020 to 2022 FORD F\-350 SD - 2020 to 2022 FORD F\-450 SD - 2020 to 2022 FORD F\-550 SD - 2022 FORD MAVERICK - 2021 FORD MUSTANG - 2019 to 2021 FORD RANGER - 2020 to 2021 FORD TRANSIT - 2019 to 2022 FORD TRANSIT CONNECT - 2020 to 2022 LINCOLN AVIATOR - 2020 to 2021 LINCOLN CORSAIR - 2007 LINCOLN MKX - 2021 to 2022 LINCOLN NAUTILUS - 2018 to 2021 LINCOLN NAVIGATOR ## Recalls for the same vehicles and component - [26V468000](/recalls/nhtsa/26V468000.md), 2026-07-20: ENGINE; ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD - [2026072](/recalls/tc/2026072.md), 2026-02-18: Engine - [25V628000](/recalls/nhtsa/25V628000.md), 2025-09-19: ENGINE - [2025376](/recalls/tc/2025376.md), 2025-07-14: Engine - [2025283](/recalls/tc/2025283.md), 2025-05-23: Engine - [25V345000](/recalls/nhtsa/25V345000.md), 2025-05-23: ENGINE - [2025165](/recalls/tc/2025165.md), 2025-03-28: Engine - [2025134](/recalls/tc/2025134.md), 2025-03-14: Engine - [2024492](/recalls/tc/2024492.md), 2024-08-23: Engine - [24V635000](/recalls/nhtsa/24V635000.md), 2024-08-23: ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL ## Other bulletins for the same vehicles and component - [SSM 55228](/bulletins/11038440.md), 2026-10-12, Service bulletin: ENGINE; UNKNOWN OR OTHER. Some 2020\-2026 Aviator/Explorer/F\-150/Bronco/Ranger vehicles equipped with a 2.7L or 3.0L \(non\-diesel\) engine may need the front engine cover removed and reinstalled for various reasons. The Workshop Manual \(WSM\), Section 303\-01 Engine \> Removal and Installation \> Engine Front Cover service procedure has been updated to include a new essential special service tool \(ESST\) guide pin alignment tool \(303\-1790\) that is used to align the engine front cover to the engine block, preventing the O\-ring seal on the engine oil galley feed tube from getting damaged during installation. - [SSM 55217](/bulletins/11038165.md), 2026-10-06, Service bulletin: ENGINE; UNKNOWN OR OTHER. Some 2020\-2024 Explorer/Aviator vehicles equipped with 3.0L EcoBoost/hybrid engine may exhibit blue or black exhaust smoke on startup for the first 5 minutes after an overnight cold soak with no illuminated malfunction indicator lamp \(MIL\) or powertrain diagnostic trouble codes \(DTCs\) present. This may be due to engine oil breaching the dynamic oil seals separating the bearing core from the turbine housing in the left side turbocharger assembly. There is a new, updated left side turbocharger oil supply tube equipped with an internal check valve to prevent the engine oil from entering turbine housing after the engine is off. Replace the existing left side turbocharger oil supply tube with the updated service part that includes the check valve \(service part\# L1MZ\-9T516\-B\) or latest level part. Refer to the Workshop Manual \(WSM\), Section 303\-04 Fuel Charging and Controls \- Turbocharger \> Removal and Installation \> Turbocharger Oil Supply Tube LH. For claiming, use causal part 9T516 and labor operation code 9440AL. - [SSM 55157](/bulletins/11037313.md), 2026-09-15, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM; ENGINE. Some 2022\-2024 Maverick Hybrid vehicles may exhibit an intermittent vibration and/or crunching noise after a cold start while the engine is running with the vehicle stationary in drive with no throttle input and brakes applied. An intermittent engine rocking or rolling motion in one direction may also be observed while the concern is present with the hood open.\
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The noise may be present with no drivability concerns, relevant diagnostic trouble codes \(DTC\) stored, warning indicators illuminated and/or warning messages displayed. The noise may reduce or be eliminated after several minutes of driving when the powertrain warms up.\
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This condition does not affect vehicle durability and no additional diagnosis or service is required for this condition at this time. Inform customers that they can continue to drive the vehicle and engineering is currently working on a solution for this condition that is expected in Q4 of 2026. Replacement of the engine or transmission will not resolve this condition. Monitor Professional Technician System \(PTS\) for additional information and schedule s - [25M03](/bulletins/11036553.md), 2026-09-01, Other: UNKNOWN OR OTHER; ENGINE. Customer Satisfaction Program 25M03 Certain 2020\-2025 Model Year Escape, 2021\-2025 Model Year Corsair and 2022\- 2025 Model Year Maverick Vehicles equipped with a 2.5L Hybrid or Plug\-In Hybrid engine \- Exhaust Gas Recirculation \(EGR\) Differential Pressure Sensor Replacement, if Required After Dealer Evaluation - [26L02](/bulletins/11036546.md), 2026-09-01, Other: UNKNOWN OR OTHER; ENGINE. Customer Satisfaction Program 26L02 Certain 2014\-2021 Model Year Various Vehicles 1.0L Fox Classic Engine Timing Belt and Oil Pump Belt Interval Change - [26L01](/bulletins/11036545.md), 2026-09-01, Other: ENGINE. Customer Satisfaction Program 26L01 Certain 2018\-2024 Model Year Various Vehicles 2.0L Panther Diesel Engine Timing Belt and Tensioner Interval Change - [TSB 26\-2375](/bulletins/11036283.md), 2026-08-19, Service bulletin: POWER TRAIN; ENGINE; ELECTRICAL SYSTEM. This article supersedes TSB 26\-2050 to increase the labor operation allowance of labor operations A and B. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Poor shift quality Illuminated powertrain malfunction \(wrench\) indicator with diagnostic trouble codes \(DTC\) P2704 and P0771 stored in the PCM/TCM. This may be due to a calibration in the TCM and/or wear between the input shaft and the E clutch hub causing the input shaft O\-rings to become damaged resulting in an open E clutch circuit. Additional model information: 6.7L Diesel Engine 2022\-2024 F\-550 or F\-600 F\-Super Duty vehicles built on or before 15\-May\-2024 with over 5,000 miles \(8,000km\) - [25M01](/bulletins/11035635.md), 2026-08-04, Other: ENGINE; UNKNOWN OR OTHER. Customer Satisfaction Program 25M01 Certain 2021 Model Year F\-150 3.0L Diesel Engine and 2020\-2022 Model Year Super Duty with 6.7L Diesel Engine Nitrogen Oxide \(NOx\) Sensor Replacement, If Required After Dealer Evaluation Reference: Emissions Recalls 22E02, 22E04, 23E01, and 25E09 - [SSM 54980](/bulletins/11034857.md), 2026-07-08, Service bulletin: POWER TRAIN; FUEL/PROPULSION SYSTEM; ENGINE. Some 2022\-2024 Maverick Hybrid vehicles may exhibit an intermittent vibration and/or crunching noise after a cold start while the engine is running with the vehicle stationary in drive with no throttle input and brakes applied. An intermittent engine rocking or rolling motion in one direction may also be observed while the concern is present with the hood open. The noise may be present with no drivability concerns, relevant diagnostic trouble codes \(DTC\) stored, warning indicators illuminated and/or warning messages displayed. The noise may reduce or be eliminated after several minutes of driving when the powertrain warms up. This condition does not affect vehicle durability and no additional diagnosis or service is required for this condition at this time. Inform customers that they can continue to drive the vehicle and engineering is currently working on a solution for this condition that is expected in Q3 of 2026. Replacement of the engine or transmission will not resolve this condition. Monitor Professional Technician System \(PTS\) for additional information and schedule - [25E09](/bulletins/11034230.md), 2026-07-01, Emissions: ENGINE. NEW VEHICLE DEMONSTRATION / DELIVERY HOLD Emissions Recall 25E09 Certain 2022 Model Year F\-250 \- F\-600 Vehicles with 6.7L Engines Powertrain Control Module Programming and Particulate Matter Sensor Installation JSON: [/v1/bulletins/10204040](/v1/bulletins/10204040) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20SSM%2050306&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10204040&vehicle=Service%20bulletin%20SSM%2050306)