Service bulletin SSM 51172

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10226738
Published by NHTSA	2022-11-29
Manufacturer's number	SSM 51172
Manufacturer's date	2022-11-01
NHTSA component	ENGINE AND ENGINE COOLING

NHTSA's summary

Some 2022 Expedition/Navigator vehicles may exhibit reduced or intermittent power steering assist levels at engine start up and vehicle not moving or Steering Assist Fault Service Required message in instrument panel cluster (IPC) with diagnostic trouble code (DTC) U2016:47 present in the Power Steering Control Module (PSCM). This may be due to PSCM software. To correct the condition, reprogram the PSCM using the latest software level of the Ford Diagnosis and Repair System (FDRS). For claiming, use causal part 3504 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Trouble codes named

U2016

Vehicles listed
FORD EXPEDITION	2022
LINCOLN NAVIGATOR	2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
SSM 54392	2025-12-01. Service bulletin. Some 2021-2025 F-150/Expedition/Navigator vehicles equipped with a 3.5L EcoBoost engine may exhibit diagnostic trouble code (DTC) P0299 stored in the powertrain control module (PCM) and may also exhibit a rattle noise from the turbocharger. This may be due to the wastegate actuator rod being disconnected. Workshop Manual (WSM), Section 303-04 Fuel Charging and Controls > Turbocharger has been added to address this condition to allow servicing of the turbocharger actuator rod. In addition, the wastegate actuator rod and associated retention springs and clips have been released as lower level components to complete the repair without replacing the entire turbocharger actuator assembly.
SSM 54363	2025-11-13. Service bulletin. Some 2021-2025 Expedition/Navigator/F-150/F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis/F-650/F-750/Transit vehicles equipped with a 2.7L/3.5L (non hybrid)/6.8L/7.3L engine and 2021-2026 E-Series may exhibit a rattle/scraping noise from the bellhousing area on start-up. Workshop Manual (WSM), Section 303-00 Engine System - General Information > Diagnosis and Testing and 303-06 > Starting System has been updated to address this condition. Additionally, WSM, Section 303-01 > Removal and Installation > Engine to Transmission Spacer Plate has been added to address this condition. Refer to the revised WSM sections for normal diagnosis.
SSM 54269	2025-10-08. Service bulletin. Some 2021-2025 Expedition/Navigator/F-150/F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis/F-650/F-750/Transit vehicles equipped with a 2.7L,3.5L EcoBoost (non-hybrid), 3.5L Cyclone, 6.8L or 7.3L engine, may exhibit a rattle/scraping noise from the bellhousing area on start-up. Workshop Manual (WSM), Section 303-00 Engine System - General Information > Diagnosis and Testing and 303-06 > Starting System has been updated. Additionally, WSM, Section 303-01 > Removal and Installation > Engine to Transmission Spacer Plate has been added to address this condition. Refer to the revised WSM sections for normal diagnosis.
SSM 53973	2025-07-02. Service bulletin. Some 2021-2024 Edge/Nautilus, 2021-2025 Bronco/Bronco Sport/E-Series/Escape/Corsair/Expedition/Navigator/Explorer/Aviator/F-150/F-Super Duty/Mustang/Ranger, and 2022-2025 Maverick vehicles may require an A/C compressor clutch assembly replacement be performed for various concerns. Workshop Manual (WSM), Section 412-00 Removal and Installation has been updated to eliminate the need to remove and install the A/C compressor to change out the A/C Compressor clutch assembly.
SSM 53764	2025-05-21. Service bulletin. Some 2020 Continental, 2020-2024 Edge/Nautilus, 2020-2025 Explorer/Aviator/Escape/Corsair/F-150/F-Super Duty/Ranger/Transit/E-Series, 2021-2025 Bronco, and 2022-2025 Maverick vehicles may require an engine cooling system flush to be performed for various concerns. Workshop Manual (WSM), Section 303-03 has been updated to eliminate the need to remove and install the radiator assembly to perform a radiator flush.
SSM 52335	2024-03-20. Service bulletin. For 2015-2024 Ford and Lincoln vehicles equipped with turbocharged engines and customer concern of an engine oil leak, refer to Workshop Manual (WSM), Section 303-00 for oil leak inspection and testing methods. Ford has evaluated turbochargers replaced for oil leak symptoms and although oil may collect on the external surface of a turbocharger, it is extremely rare for a turbocharger assembly to be the root cause of the oil leak. Careful inspection of the turbocharger oil feed and drain tubes should be performed along with the recommended WSM procedures as needed. Warranty claims for turbocharger replacement going forward will be assessed.
22U08	2023-07-07. Service bulletin. Certain 2022 Model Year 3.5L GTDI Equipped Expedition, F-150 and Navigator Vehicles Heavy Grey/Blue Smoke and/or Oil from Exhaust Tailpipe(s)
SSM 51764	2023-07-03. Service bulletin. Some 2020-2023 Explorer/Aviator vehicles equipped with a 3.0L EcoBoost may exhibit an illuminated malfunction indicator lamp (MIL) and low oil pressure warning in the instrument panel cluster (IPC), with diagnostic trouble codes (DTC) P0521 and/or P0524 in the powertrain control module (PCM). This condition may be caused by an internal oil pressure leak. If pinpoint test E in the Workshop Manual (WSM) Section 303-01B directs you to the replacement of the oil pump, upon reassembly inspect that the main oil gallery tube (6718) is assembled and aligned properly on the back of the engine front cover. The engine oil gallery seal (00815) must be replaced any time the front cover is removed (per WSM Section 303-01B). The WSM front cover removal and installation procedure is in the process of being updated.
SSM 51737	2023-06-30. Service bulletin. Some 2022-2023 Navigator vehicles may exhibit the power running boards defaulting to OFF after a key cycle. This condition does not affect vehicle durability and no additional diagnosis or service is recommended 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. The customer can temorarily reset to Auto by entering the Power Running board Setting in the center display screen - Settings > Power Running Board > Runing Board Mode > Auto. Replacement or reprogramming of the SYNC module (APIM) is not recommended for this condition. Monitor OASIS for additional information and schedule service appointments for customers once the repair becomes available.
SSM 50835	2022-06-17. Service bulletin. Some 2021-2022 F-150 vehicles built on or before 08-Mar-2022 and some 2021-2022 Expedition/Navigator vehicles built on or before 14-Mar-2022 equipped with a 3.5L EcoBoost engine may experience a coolant leak at the thermostat housing. This may be due to an incomplete weld on the thermostat housing which can leak during normal vehicle operation. To correct the condition, replace the thermostat housing using service part number ML3Z-8A586-C. Refer to Workshop Manual (WSM), Section 303-03. For claiming, use causal part 8A586 and applicable labor operations in Section 08 of the Service Labor Time Standards (SLTS) Manual.