Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Lincoln for this TSB. Call your local Lincoln dealer's service department & ask for a copy of TSB# TSB-18-16-14.
Affected Component: STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS
FORD: SOME EXPEDITION AND NAVIGATOR VEHICLES MAY EXHIBIT THE MALFUNCTION INDICATOR LIGHT (MIL) ON WITH DTC P0345 AND/OR P0349 WITHOUT ANY DRIVEABILITY SYMPTOMS. *PE